Option D has the sentence which is grammatically correct. 

• In option A, the word "worth" should be followed by a V-ing. Thus, in place of "think", "thinking" should be used. 
• In option B, the subject "he" is not the actual doer but is receiving the action. Thus, the sentence should be in the passive form. In place of "has dismissed", "has been dismissed" should be used. 
• In option C, before the subject "meeting", the indefinite article "a" should be used. 

The correct sentence is:

Can the sales team meet its financial objectives?

Let’s first see the meanings of the given words:

Irritated = angry

Avid = extremely eager or interested

Inattentive = not paying attention

Erratic = unusual

• The given sentence shows that Ritu is extremely interested in books.
• Thus, “avid” will be the appropriate choice here. 

Hence, option B is the correct answer.

• The sentence cannot end with the relative pronouns "who" and the conjunction "that" as they need to be followed by the clauses.
• This eliminates options A, B and D.
• The sequence will start with part P and it will be followed by S.
• The adjective "many" will be followed by a countable noun (victims). This means that S will be followed by Q.
• The relative pronoun "who" will be followed by a singular verb (used for the noun "one"). Also, we cannot use the exclamation mark (given in part R) in the middle of a sentence. It will only be used at the end. 

The correct sequence will be:PSQR.

After rearranging the parts, the correct sentence will be: All tyrants realize that, one day, amongst their many victims, there is sure to be one who rises against them and strikes back!

Hence,option C is the correct answer.

The underlined part is grammatically incorrect. 

• In place of the pronoun "it", we need "there". 
• We often use "it" as a dummy subject with adjectives and their complements:
  It’s important to wear a helmet whenever you do any dangerous sport.
• "There" operates as a dummy subject in the construction "there" is or "there are". "There is/are" indicates that something or someone exists or is in a particular place or situation.
  e.g. There are two shops in the village.
• With the noun "dearth", we use the preposition "of". 

The correct sentence will be: Human Resources managers complain that there is a dearth of talented candidates.

Let’s first see the meanings of the given words:

Transition = The act of passing from one state or place to the next

Process = A particular course of action intended to achieve a result

Transaction = A particular instance of buying or selling

Method = A way of doing something, especially a systematic way; implies an orderly logical arrangement

• A major global change has been seen in the world lately.
• It is the change in the medium of messaging.
• Earlier it used to be through mails, but now it has switched to ‘social media’.
• So, "transition" is the most appropriate word.

Hence, option A is the correct answer.

The underlined part is grammatically incorrect.

• We use the base form of the verb after the modal verb.
• That is, ‘stay’ should be used here.

The correct sentence will be: We should all stay united.

Hence, option C is the correct answer.

Option A has the grammatically incorrect part. The error is related to noun.

• In this sentence, "sister-in-laws" is erroneous.

• “Sister-in-law” is a term where ‘sister’ is the noun and “in-law” is an adjective that modifies that noun.

• So, in order to express the plural, the plural form of the noun should be used.

• Thus the "-s" must be added to "sister". The correct term is ‘sisters-in-law’.

The correct sentence will be: My sisters-in-law, who live in the US, are planning to visit us during the winter break.

The underlined part is grammatically incorrect. 

• The noun 'father' needs the possessive adjective 'your' (not the possessive pronoun 'yours').
  Possessive pronouns must be used without a noun. They refer back to a noun or noun phrase already used, replacing it to avoid repetition. 
  e.g. The house on the corner is theirs.
  Possessive adjectives show that something belongs to someone. They are always followed by a noun. 
  e.g. Jane takes pride in her outfits.
• Thus, replace 'yours' with 'your' in the underlined part.
• Also, we need the subject pronoun 'who' for the subject 'father'. 
• Thus, replace 'whom' with 'who'. 
  Since the pronoun 'who' has been used for the singular noun 'father', we will use a singular verb 'is' with it. 

The correct sentence will be: The loud and incessant chatter worries your father who is trying to concentrate.

Hence,option C is the correct answer.

Let us understand the meaning of the given words :-

Opprobrium = severe criticism and blame.

e.g. International opprobrium has been heaped on the country following its attack on its neighbours.

Adulation = excessive praise.

e.g. As a born performer, she loves the excitement and she loves the adulation.

Ignominy = public disgrace.

Mystical = inspiring a sense of spiritual awe and fascination.

Preclude = to prevent something from happening.

Hence,option A is the correct option.

The underlined part is grammatically correct. 

Hence, option D is the correct answer.