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").

[EX Q]: migration is when animals travel from the northern most state to Texas during what segment of time? (A) lake fronts (B) birds (C) winter (D) spring
[EX A]: C

[EX Q]: Which is competition? (A) a giraffe eats the highest leaves (B) a bear takes a salmon from the stream (C) a shark eats a tuna that an orca was hunting (D) a slug eats a blade of grass
[EX A]: C

[EX Q]: Soil quality is improved when (A) rain water floods the land (B) organisms pass and rot away (C) small trees sprout up (D) microscopic insects infest the landscape
[EX A]:
B