Answer:
A student sometimes discovers he or she doesn't like their chosen field.
Explanation:
The pronoun-antecedent agreement simply means that the pronoun agrees with the antecedent in number which can either be singular or plural (pronoun) or first person, second person, etc (antecedent).
The sentence that has a problem with the pronoun-antecedent agreement is A student sometimes discovers he or she doesn't like their chosen field because the pronoun does not agree with the antecedent in number.
The answer would be C.) an Historical allusion
This is correct. You can notice this occurrence on acronyms such as NASA, CIA, FBI, etc...
Your answer is B-Finite.
Finite is something that has bounds or limits.
Unlike INfinite which goes on forever.
-Seth