TASK DEFINITION: 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").
PROBLEM: which form of transportation has zero emissions? (A) motorbikes (B) speed boats (C) hybrid cars (D) pedal bikes

SOLUTION: D

PROBLEM: Some people have an (A) tubs for skin (B) extra rib (C) snakes for hair (D) magic

SOLUTION: B

PROBLEM: Consumers eat other what? (A) oxygen (B) animal toys (C) rays (D) weaker bugs

SOLUTION:
D