The sentence that uses a gerund phrase as a predicate noun is: My job is leading people to their seats in the auditorium. The gerund phrase used in this sentence is "leading people to their seats" and this is used as a predicate noun.
IS there more context to this question? Or maybe a story or image referring to it?
Past form means it happened in the past.
Breaking means it is happening now (present tense) and is incorrect.
Broken is an adjective not a verb and is therefore incorrect.
Broke is the correct choice because it is past tense. Think, if you said, "I broke the chair" it means you broke it in the past, not in the present or future.
Breaked is not a word.