Question

which organism has a narrow niche in an ecosystem? generalist raccoon specialist

Explanation:

In ecology, a specialist organism has a narrow niche, meaning it has specific requirements for resources, habitat, or environmental conditions and can only survive in a limited range of conditions. A generalist has a broad niche (e.g., raccoons, which can adapt to many environments and food sources). So the organism with a narrow niche is a specialist.

Answer:

specialist (the option "specialist")