The last sentence is correct, because the other ones either had periods in the middle or too many commas in them.
The answer is A. Hope this helps you out!!
Honestly I'd answer this truthfully if Shakespear didn't make me want to shoot myself.
Chile anyways thx for the points
A Major is the subject that a student gets specialized knowledge in, during a degree level course in college.
Explanation:
A degree is a blanket term, while a major is a specific term that tells about the subject in which the student is studying
