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: Four students tried to find out which magnet was the strongest. They each shared one idea. Which idea shows scientific thinking?  
 (A) We can pick the longest magnet. (B) We can pick the heaviest magnet. (C) We can measure the strength of the magnets. (D) We can vote for the magnet that we think is the strongest.

Answer: C


Question: Vehicle exhaust contains a form of pollution called particulate matter. Technologies are being developed to reduce the amount of particulate matter in exhaust. A vehicle that produces less particulate matter would have the greatest impact on which aspect of human health?  
 (A) heart health (B) respiratory health (C) the rate of birth defects (D) weight and physical fitness

Answer: B


Question: Some researchers predicted that mice could learn their way around a maze quickly if given a food reward. After many trials, the results came back but differed from the hypothesis. How should the researchers proceed?  
 (A) Show some results that agree with the hypothesis. (B) Report the results accurately and then form a new hypothesis. (C) Conduct more trials until the hypothesis is proven. (D) Rewrite the hypothesis to better match the results.

Answer:
B