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]: How do most fish get the oxygen they need to survive?  
 (A) They take in water and break it down into hydrogen and oxygen. (B) Using their gills, they take in oxygen that is dissolved in water. (C) They get their oxygen from the food they eat. (D) They come to the surface every few minutes to breathe air into their lungs.
[A]: B


[Q]: Which is considered a property of soil?  
 (A) streak (B) fracture (C) texture (D) luster
[A]: C


[Q]: A student investigated the effect of the color of light on the growth of plants. Red, yellow, and green lights were used in the experiment. If another student were to conduct the same experiment, which would be the most important procedure to follow to yield the same results?  
 (A) to do the investigation at the same time of year (B) to use the same chart for recording growth (C) to do the investigation in the same room (D) to use the same colors of lights
[A]:
D