In which sentence is the agreement between the pronoun and antecedent correct?

some colleges prefer students with high grades; others base their admissions on students’ art work.

once a student gets a degree in architecture they must work as an intern in an architecture firm.

after two years of internship, interns take a state examination to earn his or her licenses as registered architects.

Some colleges prefer students with high grades; others base their admissions on students’ art work.

Explanation:

The other options have incorrect agreement between a pronoun and its antecedent:

a student (singular) - they (plural)

interns (plural; i.e they) - should be their licenses as registered architects. (not his or her licenses as registered architects.)      

answer: granola bars and bottled water

explanation:

this makes the correct assumption that it is a grocery store

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