TASK DEFINITION: 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.
PROBLEM: The yellow-throated longclaw is a bird that lives on the dry savanna of Africa. It looks almost exactly like another bird, the western meadowlark of North America. Although the birds look very similar, they are not even in the same taxonomic family. Scientists think the birds look alike because the two species developed under similar environmental pressures, even though they developed thousands of miles apart. Which process does their development demonstrate?  
 (A) sexual selection (B) disruptive selection (C) divergent evolution (D) convergent evolution

SOLUTION: D

PROBLEM: Which of these best describes wind energy?  
 (A) limited (B) renewable (C) damaging (D) inexpensive

SOLUTION: B

PROBLEM: When a thin slice from an onion is viewed through a microscope, lots of little box-like shapes are seen. These shapes are most likely  
 (A) atoms. (B) dust. (C) cells. (D) bubbles.

SOLUTION:
C