Question

Choose the sentence that uses correct spelling and capitalization.

A. Committee members agreed that its primary purpose is to ensure the selection of music will be approved by the principal.
B. Committee members agreed that it's primary purpose is to ensure the selection of music will be approved by the principal.
C. Committee members agreed that its primary purpose is to insure the selection of music will be approved by the principal.
D. Committee members agreed that its primary purpose is to ensure the selection of music will be approved by the Principal.

Answer 1

A. Your answer is A.

It's means it is.

The other ones just have small mistakes.

Answer 2

A. because Committee is the beginning of a sentence and ensure is to make sure something happens where insure is to issue and insurance policy. Also because it's the principle not Principle So&So. Principle would be capitalized if it was personal.