instruction:
You are given a science question (hard-level) and four answer options (associated with "A", "B", "C", "D"). Your task is to find the correct answer based on scientific facts, knowledge, and reasoning. Do not generate anything else apart from one of the following characters: 'A', 'B, 'C', 'D'. There is only one correct answer for each question.
question:
Which phrase does not describe asexual reproduction in organisms?  
 (A) requires two parents (B) little variation in offspring (C) only one type of cell involved (D) duplicates its genetic material
answer:
A


question:
Two chemicals react in a beaker that has water droplets on the outside of the bottom of the beaker. The water droplets freeze. Which statement best describes the reaction?  
 (A) Endothermic because energy is absorbed. (B) Endothermic because energy is released. (C) Exothermic because energy is absorbed. (D) Exothermic because energy is released.
answer:
A


question:
How do moose use a learned behavior to protect themselves?  
 (A) They have hollow hair to keep warm in the winter. (B) They roll in a pool of muddy water to avoid fly bites. (C) They have keen hearing to sense danger in the forest. (D) They use their wide hooves to prevent sinking in deep snow.
answer:

B