most four-year colleges require high school students to complete blank years of social studies to be eligible for admission

3 years of social studies

Explanation:

2 is a wrong answer.

impartial means: treating all rivals or disputants equally; fair and just.

i would say that impartial is agreeing with something, because impartial means to treat your rivals, arguments, and reasoning equally and fair. so if you rival says something, agreeing on it means you did the impartial.