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]: Seismic waves occur as a result of an earthquake. Which statement describes a wave property that makes it possible for scientists to locate the source of an earthquake?  
 (A) The wavelength of a wave is measured from crest to crest. (B) Waves travel uniformly outward from the wave source. (C) The frequency of waves varies in different mediums. (D) Waves move at the same speed in different materials.
[A]: B


[Q]: What causes ocean water to evaporate in the water cycle?  
 (A) energy from the Sun (B) energy from ocean waves (C) energy from Earth's rotation (D) energy from Earth's moon
[A]: A


[Q]: Which is the most likely way a scientist collects data during an experiment?  
 (A) calculator (B) graphs (C) observations (D) computer
[A]:
C