Which one of the following is correctly matched?

Options

A. Trygon- Monitor
B. Ichthyopis -Crow
C. Varanus -Stingray
D. Pristis - Sawfish

Answer

To solve the question "Which one of the following is correctly matched?" we need to analyze each of the given options and determine if they are accurately paired.

### Step-by-Step Solution:

1. **Analyze Option A: Trigon (Stingray)**
- Trigon is indeed the genus of stingrays.
- However, the question states "trigon monitor," which is incorrect because it implies a connection to monitors (lizards) that does not exist.
- **Conclusion**: Incorrect match.

2. **Analyze Option B: Ichthyopus (Crow)**
- Ichthyopus is the genus of caecilians, which are limbless amphibians.
- The term "crow" does not relate to caecilians in any way.
- **Conclusion**: Incorrect match.

3. **Analyze Option C: Varanus (Stingray)**
- Varanus is the genus of monitor lizards, not stingrays.
- This option incorrectly associates Varanus with stingrays.
- **Conclusion**: Incorrect match.

4. **Analyze Option D: Pristis (Sawfish)**
- Pristis is indeed the genus of sawfish.
- This is a correct association as sawfish belong to the family Pristidae.
- **Conclusion**: Correct match.

### Final Answer:
The correctly matched option is **D: Pristis (Sawfish)**.

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