A. water, light and predator-prey relationship
B. food and water availability
C. physical environment
D. competition for food and space
Correct Answer: Option D
D. competition for food and space
Explanation
The competition in a territory is the factor that basically determines whether or not a species will survive or not in that territory. Ecological niche is the total package of the habits of a species. The competition for food and water is the most important influencer of the ecological niche.
