The correct answer is D. All of these.
An ecological niche is the role and position of an organism within its environment. It is a combination of the organism’s physical habitat, its trophic level, its interactions with other organisms, and its adaptations to the environment.
The resource an organism utilizes is one of the most important factors in determining its niche. The organism must be able to find and obtain the resources it needs to survive, such as food, water, and shelter.
The functional role an organism plays in the ecological system is also important. The organism may be a predator, a prey item, or a decomposer. It may also play a role in pollination, seed dispersal, or nutrient cycling.
The range of conditions that an organism can tolerate is also important. The organism must be able to survive and reproduce in the environmental conditions that are present in its habitat.
All of these factors together determine the ecological niche of an organism.