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").

which of these formations are typically the highest point from sea level? (A) the sandy river bank (B) a long river channel (C) a cooled lava top (D) a lush green valley
C

Adding something poisonous to an environment and harming it is called what? (A) dirtying (B) liking (C) cleaning (D) observing
A

Which organism cannot specialize? (A) mammal (B) plant (C) fish (D) protozoa

D