How to identify the simple subject of the sentence:
(1) There is a word that functions as an adverb of place. In the sentence, it is used in front position. It refers to the subject.
(2) "Are" is the be verb.
(3) "Too" is an adverb modifying the adjective "many".
(4) "Many" is an adjective modifying the noun.
(5) "People" is the simple subject.
(6) "On this elevator" is a prepositional phrase.
If you want to have the complete subject, it is "too many people."
Let’s assume a random book. If you critique it, you are pointing out its flaws. Like “this book has good dialogue but it is taken down from the fact that the character decisions are remarkably out of character, bizarre pacing, and a lackluster villain.”
Answer : Us , predicate nominative
B
Us is an object pronoun so it is part of predicate
I hope that's help and have a great night !