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: What is the name of the product formed from the reaction shown below? 4Fe(III) + 3O_{2} -> 2Fe_{2}O_{3}  
 (A) iron (II) oxide (B) iron (III) oxide (C) oxygen ferrite (D) diferrous trioxide

SOLUTION: B

PROBLEM: Which is the best evidence for the theory of continental drift?  
 (A) the appearance of volcanoes at the boundaries where plates collide (B) earthquakes at boundaries where one plate slides past another (C) cases where a species exists in only one isolated place (D) fossils of the same species found on widely separated continents

SOLUTION: D

PROBLEM: A group of citizens want to have a statue built out of marble. They want to place it in a climate that has a slow rate of chemical weathering. In which type of climate would it be best to place the statue for the slowest rate of chemical weathering?  
 (A) hot and dry (B) cold and dry (C) hot and humid (D) cold and humid

SOLUTION:
B