Question

which of the following is the medical symbol for diastolic blood pressure?
options: d, b, ±, a

Explanation:

In medical terminology, the symbol for diastolic blood pressure is typically "D" (or sometimes written as "diastolic" with the symbol representation related to it, and among the given options, the "D" option is the one associated with diastolic blood pressure (systolic is often "S", but here the options include "D" which is the standard symbol for diastolic in blood pressure notation).

Answer:

D. D (assuming the first option is D, as per the visual with the first circle labeled D; the key is that the medical symbol for diastolic blood pressure is represented by "D" in common notation for blood pressure, e.g., in a blood pressure reading like 120/80, the 80 is diastolic and the notation for diastolic is associated with "D" in relevant symbols)