I'd say b, but I feel this could be somewhat open to interpretation.
Yes it is an hero because he help them
Answer:
- The phrase "art history professor" should be set of with commas
Explanation:
the subject in this sentence is "Valentine's mother" "an art history professor just renames the or further describes the subject, ("an art history professor" is talking about "Valentine's mother") therefore it should be separated with commas.
I hope this helps you :)
