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").
--------
Question: heat and pressure change the remains of what into natural gas? (A) leaves (B) cans (C) books (D) cars

Answer: A


Question: an area of low-lying ground near to a river is at risk of (A) over fishing (B) balloon landings (C) droughts (D) H20 accumulation

Answer: D


Question: if a tree stands firm during a windy day, which of these could be holding it in place? (A) the leaves on the branches (B) the sap in the tree (C) the branches on the stem (D) the roots in the ground

Answer:
D