This isn’t an equation— equations require an equal sign and a variable of some sort on the other side of that said equal sign. Sorry.
The closest answer to being correct is A., "Compartes la paella?"
It might be the difference between "proper" Spanish and what I know, but even that seems like it's wrong. If anything, I would ask "Compartirás la paella?"
But A. is your answer
Answer:
contestar with to answer
¿Con quién hablo ? with Who am i speaking with ?
marcar with to dial
¿podría hablar con ? with May I speak with ?
