instruction:
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.
question:
Which land feature is formed from erosion by waves?   
 (A) a sandbar (B) a sea cliff (C) a barrier reef (D) a barrier island
answer:
B


question:
Which scientist is known for his genetics experiments with pea plants?  
 (A) Charles Darwin (B) Gregor Mendel (C) Carolus Linnaeus (D) Robert Hooke
answer:
B


question:
A student wants to perform an experiment to determine what temperature is best for growing tomato plants. Which is the best piece of equipment to use in this experiment to measure the independent variable?  
 (A) rain gauge (B) light meter (C) tape measure (D) thermometer
answer:

D