the correct answer is b) they.
option a is incorrect because "I" is in first, no third person. It is also singular, and not plural. option c is not correct because "he" is in third person, but it is not plural, since he is referring to one person. (so this is also not correct) option d is also not correct because despite "we" being a plural pronoun, it is not in third person, since "we" means one of the people is the person speaking. so, this leaves us with b to be our correct answer since "they" is both in third person and plural.
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