Question

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Explanation:

Step1: Recall Pulse Pressure Formula

Pulse pressure is calculated as the difference between systolic blood pressure (SBP) and diastolic blood pressure (DBP). The formula is:
\( \text{Pulse Pressure} = \text{SBP} - \text{DBP} \)

Step2: Identify SBP and DBP

Preston’s blood pressure is \( 120/80 \), where \( \text{SBP} = 120 \, \text{mmHg} \) and \( \text{DBP} = 80 \, \text{mmHg} \).

Step3: Calculate Pulse Pressure

Substitute the values into the formula:
\( \text{Pulse Pressure} = 120 - 80 = 40 \, \text{mmHg} \)

Answer:

40 mmHg (corresponding to the option "40 mmHg")