Biology

The correct answer is:

A.Sharks, groupers, anemones, and shrimp on a coral reef.

A community is a group of different species that live in the same area and interact with one another. In this case, sharks, groupers, anemones, and shrimp are different species that live in the same coral reef ecosystem and interact with each other in various ways (e.g., predator-prey relationships, mutualism).

Here's why the other options don't fit as well:

B.Decorator crabs on the seafloor: This refers to a single species (decorato...