I believe the answer is going to be A but without the underlined phrase I am not 100% sure.
Answer:
Subject
Explanation:
Your sentence always needs a subject if not then your sentence would make no sense because you wouldn't be talking about a certain thing.
Answer:
ok i have a few
Explanation:
death: it is a big pain but adventually you do get over it
physical pain: like falling off a bike you may scratch your knee but the pain will go away
