Well they are different because in the u.s they call it subway if I'm right (I'm from the uk) also in France it's not underground like in the U.S. for the simalarties, they both use trains and I'm not sure of another. Hope this helped!
You use: Vous when talking in a formal way, or when talking to multiple people
You use: Je when talking about yourself
And you use: Tu when talking informally or to a friend
So the answer is B) tu
Answer:
I detest...
I like to listen to...
I watch from time to time...
I always eat...
Dunno
I sometimes study...