Given the task definition and input, reply with output. 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.

Some birds eat seeds. If a bird drops a seed in soil, which best explains how a plant could be helped?  
 (A) It could get more sunlight. (B) It has a chance to reproduce. (C) It gets closer to water. (D) It makes more oxygen.

B