Answer:
C. Land.
Step-by-step explanation:
When a company clears out a forest, it primarily contributes to land pollution. The removal of trees and vegetation from an area can lead to soil erosion, loss of biodiversity, and disruption of ecosystems. Additionally, the clearing process may involve the use of heavy machinery and the generation of construction waste, further impacting the land. While there can be indirect impacts on air and water quality due to deforestation, the immediate and direct pollution associated with clearing a forest is primarily related to land pollution. Therefore, the correct answer is C. Land.