Q: 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.
Which would most likely need to happen for a new plant to grow?  
 (A) Leaves grow out of a stem. (B) Insects get attracted to the petals. (C) A blossom falls into the soil. (D) A seed sprouts into a seedling.
A:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
D