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 tone is made when a hammer makes contact with (A) a waterfall (B) air (C) an solid object (D) a log
C

If a thing has a good impact on nature, it is most likely (A) putting plastics in special containers (B) burning old used tires (C) putting cigarettes out in ponds (D) using aerosol air fresheners
A

A cylinder with lenses can even make Uranus appear to be (A) farther (B) closer (C) scaled down (D) smaller
B