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]: Which tool is best used to collect information about the weather?  
 (A) ruler (B) stopwatch (C) thermometer (D) collecting net
[A]: C


[Q]: During a walk in the woods, Mandy finds a plant structure that had fallen onto the trail. Mandy can tell the object contained seeds, and thinks it came from a flowering plant instead of a conifer. How can she determine if the object came from a flowering plant?  
 (A) by looking for seed coats on the seeds (B) by looking for wing-like structures on the seeds (C) by looking for fruit tissue around the seeds (D) by looking for young sporophytes inside the seeds
[A]: C


[Q]: What evidence is there that the gravitational pull of the Moon has a direct effect on Earth?  
 (A) climate variations (B) change of seasons (C) number of earthquakes (D) changes in tidal ranges
[A]:
D