You are given a science question (easy-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.

[EX Q]: Which of these is an inherited behavior?  
 (A) a seal balancing a ball (B) a dog getting the newspaper (C) a spider spinning a web (D) an ape using sign language
[EX A]: C

[EX Q]: As Earth revolves around the Sun, the number of daylight hours varies from place to place. In which location would the number of daylight hours remain constant?  
 (A) North Pole (B) Prime Meridian (C) Equator (D) Antarctica
[EX A]: C

[EX Q]: A layer of solid brittle rock comprises the outer 100 kilometers of Earth. This layer, which contains both the crust and the upper mantle, is called the  
 (A) core. (B) sediment. (C) lithosphere. (D) hemisphere.
[EX A]:
C