The diastolic blood pressure measures the pressure in the arteries between heartbeats (when the heart muscle is resting between beats and refilling with blood) . A normal diastolic blood pressure is 80mm of Hg. So, the correct answer is option 'D' .

Normal Diastolic Blood Pressure in a Healthy Adult Man

Diastolic blood pressure is the pressure in the arteries when the heart is at rest between beats. It is an important indicator of heart health and overall cardiovascular function. In a healthy adult man, the normal diastolic blood pressure is typically around 80 mm Hg.

Explanation

- Diastolic blood pressure is measured in millimeters of mercury (mm Hg) and represents the pressure in the arteries when the heart is relaxed and filling with blood.
- A diastolic blood pressure of 80 mm Hg is considered normal for a healthy adult man. This level indicates that the blood vessels are relaxed and open, allowing blood to flow through them easily.
- Diastolic blood pressure values below 80 mm Hg are generally considered to be within the normal range for men. Values above this range may indicate hypertension or other cardiovascular issues.
- It is important to monitor both systolic and diastolic blood pressure readings to get a comprehensive picture of an individual's cardiovascular health. Systolic pressure measures the pressure in the arteries when the heart beats and pumps blood.
- Regular blood pressure monitoring, healthy lifestyle choices such as a balanced diet, regular exercise, and stress management, as well as medical treatment if necessary, can help maintain optimal blood pressure levels and prevent cardiovascular complications.

In conclusion, a diastolic blood pressure of around 80 mm Hg is considered normal for a healthy adult man. Regular monitoring and lifestyle modifications can help maintain healthy blood pressure levels and reduce the risk of heart disease and other cardiovascular conditions.