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 situation is an example of an inherited trait?
(A) lions preying on zebras (B) monkeys using twigs to get food (C) birds following migratory patterns (D) bears opening coolers at campsites

Answer: A

Question: In mice, a certain species displays incomplete dominance in coat coloring. The offspring of a black (BB) mouse and a white (bb) mouse are gray (Bb) mice. A cross between two gray mice will most likely produce offspring with which percent of coat colors?
(A) 25% black, 75% gray (B) 25% gray, 75% white (C) 25% white, 25% black, 50% gray (D) 25% gray, 25% black, 50% white

Answer: C

Question: Suppose a new fuel for cars is derived from coal. Cars can go twice as far on a tankful of the new fuel as they can on the same amount of gasoline. How would you categorize the new fuel?
(A) It is a renewable fossil fuel. (B) It is a nonrenewable fossil fuel. (C) It is a renewable biomass fuel. (D) It is a nonrenewable biomass fuel.

Answer:
B