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").

What are a source of fibers? (A) water (B) plantlife (C) rocks (D) air
B

Greenhouses are great for plants like (A) Pizza (B) Lollipops (C) Candles (D) French beans
D

If an environment experiences harsh climates (A) plants will continue to flourish (B) ponds may dry up (C) tadpoles will mature faster into frogs (D) animals will experience a boom in reproduction

B