In this task, you are given a multiple-choice question and you have to pick the correct option. Answer with option indexes (i.e., "A", "B", "C", and "D").

[EX Q]: heat and pressure change the remains of what into natural gas? (A) leaves (B) cans (C) books (D) cars
[EX A]: A

[EX Q]: All the water vanishes from a small depression basked in sunlight on a paved road because of (A) freezing (B) evaporation (C) condensation (D) precipitation
[EX A]: B

[EX Q]: If a puppy is given only water for a very long time, it will (A) starve (B) need to hydrate (C) dehydrate (D) be thirsty
[EX A]:
A