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: What is an instance of carnivores only eating animals? (A) a mouse eating a cricket (B) a dog devouring a piece of cheese (C) tyrannosaurus rex devouring a pterodactyl (D) a cat eating grass outdoors

Answer: C


Question: Which likely increased atmospheric CO2 recently? (A) sustainable fisheries (B) electric cars (C) motorcycles (D) ant populations

Answer: C


Question: One component of rock formations in caves is (A) liberal tears (B) bat urine (C) salty ocean water (D) granite statues

Answer:
B