I would say that the adjectival phrase is B. overly excited. An adjective describes a noun, so an adjectival phrase would be a phrase that describes a noun. "overly excited" describes the noun "children." "to the front" and "of the room" are prepositional phrases and "pushed" is a verb.
Your question is not clear!
I think it would not make a difference as you can learn the same things.
The correct answer to this question is C- The cracks in the window forked like arteries. I have confirmed it with apex.
