A restrictive adjective clause is not set off with commas. The correct answer would be the first option. Restrictive clause is a clause that cannot be omitted in the sentence for it will change the idea of the whole sentence. It is the opposite of non-restrictive clause--a clause that serves as an additional information that is set off with commas.
The answer is A.
B- uses I instead of me
C- uses her instead of she
D- uses us instead of we
Hope this helps!
sociology is thestudy of human behavior
SO B
