The answer should be B) It reveals the characters' actions in response to the climax.
I don’t see any answer choices but I would say something like this
If he *wore* a warmer jacket, he would not have gotten frostbite
I wish that those snakes *were* fake.
If they go to the party, they would need a ride.
And if it’s asking which one is correct I would pick the last one.
Sorry if this is not what you asked for