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.

[Q]: Which of these is not a benefit of microorganisms?  
 (A) They release nutrients in soil. (B) They help make antibiotics. (C) They cause food to spoil. (D) They break down waste.
[A]: C


[Q]: A student performed this experiment: Four different types of seeds were planted in identical pots filled with the same kind and amount of soil. The pots were placed in a warm, sunny place and were given the same amount of water each day for a month. Which question about these seeds could be answered at the end of the month?  
 (A) Which seeds grew well in the dark? (B) Which seeds produced the tallest plants? (C) Which seeds survived in cold temperatures? (D) Which seeds needed the least amount of water?
[A]: B


[Q]: Which is the best example of an object that refracts light?  
 (A) eyeglasses (B) mirrors (C) silver bowl (D) television sets
[A]:
A