Final answer:
The correct form of pronoun to use in the given sentence is 'their', as the pronoun refers to a plural noun 'politicians'.
Step-by-step explanation:
In the sentence 'Most of the politicians work for ……….. own selfish interests', the correct pronoun to use is 'their'. The noun 'politicians' is plural, so we need to use the plural pronoun 'their'. Therefore, the sentence will read, 'Most of the politicians work for their own selfish interests'. Singular options like 'his' and 'her' wouldn't make sense since we are referring to a group. The pronoun 'themselves' does not fit the grammatical structure of this sentence.
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