Teacher: In this task, you are given two facts, and a multiple-choice question. Based on the given facts, answer the question with index of the correct option (e.g, "A").
Teacher: Now, understand the problem? If you are still confused, see the following example:
Fact1: a plant requires sunlight to grow, Fact2: Plants to avoid are fast-growing vines that can take over an area in no time., Question: What requires sunlight in order to take over an area? (A) spores (B) fish (C) plants (D) humans (E) pods (F) Oak (G) opossums (H) coral
Solution: C
Reason: This is a good example. Based on the facts plants require sunlight in order to take over an area.

Now, solve this instance: Fact1: Spores may be dispersed by moving water, wind, or other organisms., Fact2: Ferns reproduce by spores., Question: What helps ferns in reproduction? (A) cell wall (B) Fruits (C) wind (D) pollen (E) sun (F) seeds (G) nectar (H) earthquakes
Student:

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
C