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 most likely has the GREATEST mass?  
 (A) Chicken (B) Puppy (C) Lizard (D) Horse
answer:
D


question:
A student uses a bar graph to display the amount of rainfall per week over a 3-month period. Which other method of presentation is appropriate for the data?  
 (A) a table (B) a pie chart (C) a photograph (D) a written paragraph
answer:
A


question:
A tropical rain forest contains many tall trees. Smaller plants with large leaves grow at the base of the tall trees. The large leaves are most likely an adaptation of the plant due to which condition?  
 (A) lack of sunlight (B) lack of oxygen (C) lack of water (D) lack of food
answer:

A