Point out a non-parasite

Options

A. tapeworm
B. mosquito
C. leech
D. sea anemone

Explanation

To identify a non-parasite from the given options, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Definition of a Parasite**: A parasite is an organism that lives on or in a host organism and gets its food at the expense of its host. Parasites can be classified into endoparasites (living inside the host) and ectoparasites (living on the surface of the host).

2. **Evaluate the Options**:
- **Option 1: Tape Worm**: Tape worms are flatworms that live in the intestines of their hosts (like humans) and absorb nutrients from digested food. They are endoparasites. **Conclusion**: This is a parasite.

- **Option 2: Mosquito**: Mosquitoes feed on the blood of their hosts (like humans) and are considered ectoparasites since they live on the surface of the host. **Conclusion**: This is also a parasite.

- **Option 3: Leech**: Leeches attach to their hosts and suck blood. They are also classified as parasites. **Conclusion**: This is a parasite as well.

- **Option 4: C. enemon**: This organism belongs to the phylum Cnidaria and is free-living. It does not depend on any other organism for food, as it captures its own prey using tentacles. **Conclusion**: This is not a parasite.

3. **Identify the Non-Parasite**: Based on the evaluations, the only organism that is not a parasite is **C. enemon**.

4. **Final Answer**: The correct answer is **C. enemon**.