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: Photosynthesis is the process that converts carbon dioxide and water into  
 (A) carbon and oxygen. (B) sugar and hydrogen. (C) sugar and oxygen. (D) nitrogen and carbon.

Answer: C


Question: The parts of plants that make seeds are the  
 (A) roots. (B) stems. (C) flowers. (D) leaves.

Answer: C


Question: The length of daylight changes as the seasons change during the year. What causes these changes in daylight?  
 (A) Earth's tilt on its axis (B) the Sun's tilt on its axis (C) Earth spinning on its axis (D) the Sun spinning on its axis

Answer:
A