instruction:
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:
When a person speaks, the type of wave produced can be described as all these except  
 (A) transverse. (B) mechanical. (C) compression. (D) longitudinal.
answer:
A


question:
Which energy source is considered nonrenewable?  
 (A) moving water (B) fossil fuel (C) wind (D) biomass
answer:
B


question:
The most effective way to show a change happening over time is to display your results using a  
 (A) line graph. (B) Venn diagram. (C) pie chart. (D) flow chart.
answer:

A