there are plenty of things we can do to help build up the sea anemone population, but a few ways would be to either A) mate clownfish to reproduce, B) inform people the issue they're causing, or C) to ban clownfish buying/selling at stores.
b, this is because a consumer, is something that consumes something, and the clam consumes the energy and nutrients when it filters the particles in from the water. Because it consumes these, it is a consumer for that reason. So, the answer is b. Hope this helps!!!