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 correctly arranges three scientific terms-theory, law, and hypothesis-from least to most accepted or tested?  
 (A) theory, hypothesis, law (B) hypothesis, law, theory (C) theory, law, hypothesis (D) hypothesis, theory, law

Answer: D


Question: A student conducts an investigation. In order to make a valid conclusion, she must  
 (A) have a testable hypothesis. (B) place the data in a graph. (C) use the best technology. (D) test multiple variables.

Answer: A


Question: What takes place as a light wave enters a denser medium?  
 (A) it is reflected (B) it is absorbed (C) it is refracted (D) it is compressed

Answer:
C