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 ingredient may cause chemical change? (A) almonds (B) milk (C) citrus juice (D) olive oil
answer:
C


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


question:
If one mineral can scratch another mineral then that other mineral is softer than that one mineral, as can be tested with (A) a diamond and steel (B) a rock and glass (C) a diamond and agate (D) a ruby and salt
answer:

C