Biology

The correct answer is:

C.Parasitism; the tapeworm benefits, the dog is harmed.

This relationship is an example of parasitism. In a parasitic relationship, one organism benefits (the parasite) at the expense of the other (the host). In this case, the tapeworm benefits by absorbing nutrients from the dog's food, while the dog is harmed, usually by losing nutrients, energy, or health.

Here's why the other options are in...