Assertion : The 'T-wave' represent return of the ventricle form excited to normal state.
Reason : The end of 'T-wave' marks the end of diastole.

Options

A. If both Assertion & Reason as true & the Reason is a correct explanation of the assertion.
B. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion.
C. If Assertion is True but the Reason is False.
D. If both Assertion & Reason are false.

Answer

To solve the question, we need to analyze both the assertion and the reason provided.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that the 'T-wave' represents the return of the ventricle from an excited to a normal state.
- In the context of an electrocardiogram (ECG), the T-wave indeed represents the repolarization of the ventricles. This is the process where the ventricles return to their resting state after contraction (systole). Therefore, the assertion is **true**.

2. **Understanding the Reason**:
- The reason states that the end of the 'T-wave' marks the end of diastole.
- However, the end of the T-wave actually marks the end of ventricular systole, not diastole. Diastole is the phase when the heart muscle relaxes and fills with blood, while systole is when the heart contracts. Therefore, the reason is **false**.

3. **Conclusion**:
- Since the assertion is true and the reason is false, the correct option is that the assertion is true, but the reason is false.

### Final Answer:
- The assertion is true, but the reason is false.

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