Biology

The correct answer is C. Abiotic factors
Abiotic factors are defined as the nonliving chemical and physical components of an ecosystem that influence living organisms. Examples include sunlight, water, temperature, soil pH, and air. 

Explanation of other options:
Organism: A single living individual (e.g., a deer, a tree, a bacterium). This refers to living things, so it is incorrect.

Habitat: The specific phy...