Question

Select the correct pronoun.

There are a few Americans (who/whom) could not answer that question.

Answer 1

I'm not positive but I believe that the answer is who

Answer 2

These are some pronouns to help you!

I, me, he, she, herself, you, it, that, they, each, few, many, who, whoever, whose, someone, everybody.

It is who! :D
I hope this helps!