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 of these could be a reason why the stars seem to be in a different place at dusk than at dawn? (A) rotation of the sky (B) rotation of the sun (C) rotation of the earth (D) rotation of the person

SOLUTION: C

PROBLEM: A thermal insulator slows the transfer of what? (A) warmness (B) light (C) energy (D) liquid

SOLUTION: A

PROBLEM: What vitamins help heal bones? (A) vitamin k (B) vitamin c (C) vitamin D meals (D) human vitamins

SOLUTION:
C