In the following question, three sentences are given, out of which one or more may contain a grammatical or contextual error. Identify the sentence(s) that is/are grammatically and contextually CORRECT.
A. The board deferred the proposal, not because it lacked merit, but because its financial implications had not been examine thoroughly.
B. The survey findings are based on responses collected from households that were selectively chosen to represent only the most accessible neighbourhoods through five districts.
C. The judge’s observations were so impartial that they did not favour either the petitioner’s or the respondent’s version of events.

This sentence contains a grammatical error. The phrase “had not been examine” is incorrect. In passive voice with had been, we need the past participle form of the verb. Correct form: The board deferred the proposal, not because it lacked merit, but because its financial implications had not been examined thoroughly. Sentence B B. The survey findings are based on responses collected from households that were selectively chosen to represent only the most accessible neighbourhoods through five districts. The expression “through five districts” is not appropriate here. The correct expression should be “across five districts” if we mean that the households were spread over five districts. Sentence C C. The judge’s observations were so impartial that they did not favour either the petitioner’s or the respondent’s version of events. This sentence is both grammatically and contextually correct.