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").

Fact1: bad weather decreases visibility while driving, Fact2: Good visibility is essential for safe driving., Question: bad weather impairs (A) trees and flowers (B) filter feeders (C) safe driving (D) the environment (E) propulsion (F) homeostasis (G) road bends (H) melanin amount
C