Which of the following options is correct?

Options

A. `{:("Stenothermal","Eurythermal"),("Homo sapiens","Eurthermal"):}`
B. `{:("Stenothermal","Eurythermal"),("Macropus","Rana"):}`
C. `{:("Stenothermal","Eurythermal"),("Homo","Pinus"):}`
D. `{:("Stenothermal","Eurythermal"),("Homo","Pinus"):}`

Answer

To solve the question regarding which options are correct based on the terms steno-thermal and urethermal, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Terms**:
- **Steno-thermal**: Refers to organisms that can only survive within a narrow range of temperatures. For example, they may thrive between 30°C to 60°C.
- **Urethermal**: Refers to organisms that can tolerate a wide range of temperatures, meaning they can survive in various environmental conditions.

2. **Analyze the Options**:
- The question presents four options that pair steno-thermal and urethermal with different organisms or terms.
- We need to identify which of these pairings are scientifically valid based on the definitions of steno-thermal and urethermal.

3. **Evaluate Each Option**:
- **Option 1**: Steno-thermal and urethermal (invalid pairing).
- **Option 2**: Steno-thermal (macropus) and urethermal (renal).
- **Option 3**: Steno-thermal (homo) and urethermal (fineness).
- **Option 4**: Steno-thermal (homo) and urethermal (fineness) - appears to be a repetition of Option 3.

4. **Identify Valid Options**:
- After analyzing, it is clear that Options 3 and 4 are valid since they both refer to steno-thermal (homo) and urethermal (fineness), which are correctly paired based on the definitions.

5. **Conclusion**:
- The correct options are **Option 3 and Option 4**.