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

Answer: C


Question: Some plant species are more tolerant of acidic soil than others. The tolerant species are favored in areas affected by which consequence of human activity?  
 (A) mixing of pollutants with rain (B) erosion of topsoil by clearcutting (C) runoff of fertilizer used in farming (D) thinning of the atmospheric ozone layer

Answer: A


Question: Which trait gives owls an advantage when hunting at night?  
 (A) large eyes (B) broad wings (C) straight beak (D) smooth feathers

Answer:
A