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").

Let me give you an 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
The answer to this example can be: C
Here is why: This is a good example. Based on the facts plants require sunlight in order to take over an area.

OK. solve this:
Fact1: the looseness of soil increases the amount of oxygen in that soil, Fact2: Without oxygen in the soil, most plants die., Question: Plants may die without what? (A) nucleus of a cell (B) some looseness in the soil (C) wavelengths and photons (D) moss (E) single-celled organisms (F) organic molecules (G) snow (H) rocks
Answer:
B