SAT English Practice Question

The passage details how the natural world is intricately connected and balanced. It describes how trees rely on fungi to survive and how fungi benefit from the trees. The passage suggests that the relationship between trees and fungi is a delicate one, and that disrupting it could have unforeseen consequences. What is the main idea of this passage?

1. A.the ways in which nature’s intricate balance is maintained.
2. B.the symbiotic relationship between trees and fungi.
3. C.the environmental impact of human activity on the forest ecosystem.
4. D.the importance of preserving the forest for future generations.