I. salmon II. Shark III. Stign ray which of them is are stenohaline and eryhaline ?

Options

A. `{:("stenohaline","Euryhaline"),(I,II):}`
B. `{:("stenohaline","Euryhaline"),(I II,III):}`
C. `{:("stenohaline","Euryhaline"),(II III,I):}`
D. `{:("stenohaline","Euryhaline"),(I,II III):}`

Answer

To determine which of the organisms (I. Salmon, II. Shark, III. Stingray) are stenohaline and euryhaline, we need to understand the definitions of these terms and apply them to each organism.

### Step-by-Step Solution:

1. **Understanding Stenohaline and Euryhaline:**
- **Stenohaline** organisms are those that can only tolerate a narrow range of salinity. This means they can survive in either freshwater or saltwater but not in both.
- **Euryhaline** organisms can tolerate a wide range of salinity. They can thrive in both freshwater and saltwater environments.

2. **Analyzing Salmon:**
- Salmon are known for their unique life cycle. They typically live in seawater but migrate to freshwater to spawn. After spawning, the young salmon can return to the ocean.
- Because salmon can survive in both freshwater and saltwater, they are classified as **euryhaline**.

3. **Analyzing Shark:**
- Sharks are primarily marine animals. They are adapted to live in saltwater environments and cannot survive in freshwater.
- Therefore, sharks are classified as **stenohaline**.

4. **Analyzing Stingray:**
- Similar to sharks, stingrays are also primarily found in marine environments and are not adapted to tolerate freshwater.
- Thus, stingrays are also classified as **stenohaline**.

5. **Final Classification:**
- **Euryhaline:** Salmon
- **Stenohaline:** Shark and Stingray

### Conclusion:
- **Salmon** is euryhaline.
- **Shark** and **Stingray** are stenohaline.