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.

A scientist studies the remains of two extinct animals to learn more about how they lived. She determines that one animal was a carnivore and the other was an herbivore. Which of the following did the scientist most likely compare to make this conclusion?  
 (A) the number of bones in the animals (B) the size of the animals (C) the body covering of the animals (D) the skull of the animals
D

If an environment becomes warmer and drier, the change that would most likely help a species adapt would be an increase in its  
 (A) amount of body fat. (B) amount of body hair. (C) ability to climb trees. (D) ability to store water.
D

A student is investigating the properties of a mineral. The student tests the mineral by putting it under an ultraviolet light. Which property of the mineral can be identified using this test?  
 (A) color (B) streak (C) luster (D) fluorescence

D