The passage is in third person because it refers to her as Cathy or "her"
Answer:
Ummm it is C just trust me <3
Explanation:
It's like on khan academy and I got it wrong and found out it was C soo yeah C.
Take out the comma, there is no need for it when there are only two items listed
For once in your life, try something new and exciting.
The subject of the above sewntence is A. an understood you.
The sentence talks about you and the speaker is talking to you.
The above sentence is a compound sentence. It has an independent clause and a dependent clause.
The independent clause is (You) try something new and exciting.
The dependent clause is For once in you life. It starts with a coordination conjunction and it cannot stand on its own.