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").

adding a direct flame to container of acid causes a (A) dormant cycle (B) lot of nothing (C) lower temperature (D) vapor expulsion
D

The circulatory system is so long it (A) could be wrapped around the earth (B) is the length of a horse (C) is the length of the universe (D) is the length of the universe
A

Ducks might their webbed appendages to (A) season pizza (B) navigate (C) sing (D) do ballet

B