Respiration releases energy in the form of ATP
Respiration in the presence of `O_(2)` is called Aerobic respiration.

Options

A. If both As and R are correct and R is correct explanation of As
B. If both As and R are correct but R is not correct explanation of As
C. If As is correct, R is wrong
D. If both As and R are wrong.

Answer

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that respiration releases energy in the form of ATP.
- Respiration is a biochemical process where organic substances (like glucose) are oxidized to release energy.
- This energy is primarily stored in the form of ATP (adenosine triphosphate), which is the energy currency of the cell.

2. **Analyzing the Reason**:
- The reason provided states that respiration in the presence of oxygen is called aerobic respiration.
- This is accurate because aerobic respiration occurs when oxygen is available, allowing for the complete oxidation of glucose to produce energy efficiently.

3. **Evaluating the Relationship**:
- Both the assertion and the reason are correct statements.
- However, while the reason explains a type of respiration (aerobic), it does not directly explain why respiration releases energy in the form of ATP.

4. **Conclusion**:
- Since both statements are correct but the reason does not serve as an explanation for the assertion, the answer is that both the assertion and reason are correct, but the reason is not the correct explanation of the assertion.

5. **Final Answer**:
- The correct answer is Option 2: Both assertion and reason are correct, but the reason is not the correct explanation of the assertion.