TASK DEFINITION: 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.
PROBLEM: When a tree suffers from a decreased ability to transport materials within the phloem, what is directly impacted?  
 (A) volume of water in the xylem (B) flow of necessary nutrients (C) response to environmental factors (D) rate of photosynthesis in leaves

SOLUTION: B

PROBLEM: When would the highest tides occur along the Texas coast?  
 (A) at sunrise (B) at sunset (C) during a full moon (D) during a half moon

SOLUTION: C

PROBLEM: It takes 365 days for  
 (A) Earth to travel halfway around the Sun. (B) the Moon to travel halfway around Earth. (C) Earth to complete one orbit around the Sun. (D) the Moon to complete one orbit around Earth.

SOLUTION:
C