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.

[Q]: During which stage of an insect's life cycle does the female lay eggs?  
 (A) nymph (B) larva (C) pupa (D) adult
[A]: D


[Q]: Which of the following is the most likely cause of earthquakes?  
 (A) shifting rock layers (B) crashing meteorites (C) rotation of the core (D) magnetic force
[A]: A


[Q]: A student wants to find out whether storms with lightning produce more rain than storms without lightning. Which is the best way to answer this question?  
 (A) average the amount of rain that fell during a lightning storm (B) count number of lightning strikes during a one-hour period (C) record rainfall amounts in storms with and without lightning (D) calculate the number of fires that are caused by lightning strikes
[A]:
C