What is the best way to revise the sentence so that the punctuation is correct? The phone call from the admissions office made m
e happy. The phone call from the admissions office, made me happy. The phone call (from the admissions office) made me happy. The phone call—from the admissions office—made me happy.
If you accept either C or D as the correct revision then you have to accept both of them. Hence the best way to treat the sentence is to ignore both of them.
B is not correct either. You can over punctuate.
That leaves A.
Sometimes the right answer to many things is to do nothing. My dad used to say "Don't fix what isn't broke."