Instructions: 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.
Input: Students observed a turtle in the schoolyard. They measured the distance that the turtle traveled in 30 minutes. If the turtle walked 40 meters in that time, what was its average speed?
(A) 0.75 m/h (B) 20 m/s (C) 80 m/h (D) 1,200 m/h
Output:
C