instruction:
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").
question:
Which sustains life yet stopped growing? (A) air (B) a bush (C) a rock (D) a felled tree
answer:
D


question:
A person wants to mine something that will attract metals. The person decides to search out some (A) ceramic stones (B) iron pebbles (C) glass beads (D) plastic beads
answer:
B


question:
Which place are we likely to find algae? (A) white clouds in the sky (B) a small hidden puddle (C) an old tall building (D) a field of grass
answer:

B