instruction:
You are given a science question (hard-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 of these will result in the least gravitational attraction?  
 (A) two 2g objects 2 meters apart (B) two 2g objects 4 meters apart (C) two 1g objects 6 meters apart (D) two 1g objects 8 meters apart
answer:
D


question:
Janette conducts an investigation to see which foods make her feel more fatigued. She eats one of four different foods each day at the same time for four days and then records how she feels. She asks her friend Carmen to do the same investigation to see if she gets similar results. Which would make the investigation most difficult to replicate?  
 (A) measuring the amount of fatigue (B) making sure the same foods are eaten (C) recording observations in the same chart (D) making sure the foods are at the same temperature
answer:
A


question:
Which is a nonrenewable resource?  
 (A) oil (B) trees (C) solar energy (D) food crops
answer:

A