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").

Digestion is when stomach acid breaks down what? (A) food essays (B) sustenance (C) water (D) air
B

What does a tuna have that causes it to swim faster than a seahorse? (A) Lower body temperature (B) Bigger scales (C) Bigger fins (D) Thicker caudal fin
C

which of these would disturb a standing body of water? (A) a boat setting sail (B) an insect flying hundred feet above (C) a rock tossed in (D) A and B above

D