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: On a cold, cloudy day, the local weather forecaster predicts that a high-pressure system will be moving into the area in the next 24 hours. Which weather conditions will this system most likely bring to the area?  
 (A) stormy (B) sunny (C) snowy (D) hot

Answer: B


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: A hammer and a screwdriver are next to each other in the sunlight. After one hour, the hammer is hotter than the screwdriver. The shape and mass of each object may affect the amount of heat each object gains. Another explanation for the difference in temperature may be that the hammer and screwdriver are  
 (A) moving at different rates. (B) made of different materials. (C) used for different purposes. (D) picked up in different ways.

Answer:
B