He is deprived from basic amenities. (Improve)

• A. deprived of (Answer)
• B. deprived off
• C. deprived with
• D. No improvement

'Deprived of' is the correct collocation (to be denied something). 'Deprived from' is a common preposition error.

She is proficient at three languages. (Improve)

• A. proficient in (Answer)
• B. proficient with
• C. proficient on
• D. No improvement

'Proficient in' (a skill, language, or subject) is the standard collocation in formal and competitive English.

He is ignorant about the rules of the game. (Improve)

• A. ignorant of (Answer)
• B. ignorant on
• C. ignorant with
• D. No improvement

'Ignorant of' is the standard collocation, parallel to 'aware of' and 'conscious of'. 'Ignorant about' is heard informally but is not the preferred form in formal English.

The residents are apprehensive for their safety. (Improve)

• A. apprehensive about (Answer)
• B. apprehensive on
• C. apprehensive with
• D. No improvement

'Apprehensive about/of' (worried about) is the correct collocation. 'Apprehensive for' is incorrect — 'for' does not pair with this adjective.

He is engrossed with his studies these days. (Improve)

• A. engrossed in (Answer)
• B. engrossed at
• C. engrossed by
• D. No improvement

'Engrossed in' (completely absorbed in) is the fixed collocation. 'Engrossed with' is a common preposition substitution error.

The minister is answerable before the parliament for his actions. (Improve)

• A. answerable to (Answer)
• B. answerable at
• C. answerable with
• D. No improvement

'Answerable to' (accountable to) is the correct collocation. 'Answerable before' incorrectly borrows from legal phrases like 'appear before the court'.

She is oblivious about the danger surrounding her. (Improve)

• A. oblivious of (Answer)
• B. oblivious with
• C. oblivious for
• D. No improvement

'Oblivious of' or 'oblivious to' (unaware of) is the correct collocation. 'Oblivious about' is a frequent error since students associate 'about' with general awareness verbs.

The professor is conversant about several ancient languages. (Improve)

• A. conversant with (Answer)
• B. conversant of
• C. conversant on
• D. No improvement

'Conversant with' (familiar with, well-versed in) is the fixed collocation. 'Conversant about' is incorrect — a high-difficulty vocabulary-preposition pair tested at the UPSC/CGL level.

He remained indifferent about the criticism he received. (Improve)

• A. indifferent to (Answer)
• B. indifferent for
• C. indifferent from
• D. No improvement

'Indifferent to' (unconcerned about) is the correct fixed collocation. 'Indifferent about', though common in casual speech, is not accepted in formal competitive English.

The committee is unanimous in its decision to reject the proposal. (Improve)

• A. unanimous on
• B. unanimous with
• C. No improvement (Answer)
• D. unanimous at

'Unanimous in' (a decision, view, or opinion) is the correct, standard collocation. No improvement needed — placed at the end of a set full of preposition errors to test whether students force an unnecessary 'correction'.