If you write a sentence with an unclear antecedent, it means you used a. an object pronoun instead of a possessive pronoun. b. a pronoun that could refer to more than one person, place, or thing. c. a possessive pronoun instead of a subject pronoun. d. a plural pronoun when a singular pronoun was needed.

i think the answer is either c or d

im thinking d might make more sense though

sorry if im wrong

to convince americans of the importance of others.

pls try

the verbal in this sentence is an infinitive. when you want to know the reason of an action, you simply ask the question "why? ". once you know the reason you can answer with "because".

many times we don´t use the word "because" but we can use another expression and that is an "infinitive of purpose". example:

-why did your brother bring a book?

-he brought a book to study.

in the answer above you can see an example of an infinitive sentence, just like in the example of your text. "he couldn´t run fast enough to beat his older sister". so, the answer is infinitive.