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 did some ancient societies use to reflect light? (A) wood (B) plants (C) clothing (D) rocks
D

positively impact your bodies strength by (A) dead-lifting (B) thinking (C) sleeping (D) singing
A

The moon (A) has seven great lakes (B) is devoid of seas (C) is larger than the Earth (D) has a powerful magnetic field

B