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").

A system of tubes that relocates water and nutrients around in order to make most use of them can be found in (A) a lily (B) a door (C) a table (D) a rock
A

John Muir would likely set aside an area for (A) superheroes and villains (B) oaks and chipmunks (C) bankers and politicians (D) cars and boats
B

What is a radio used for? (A) radiation (B) human contact (C) energy (D) water

B