Which of the following pulses is auscultated with a stethoscope?

The apical pulse is measured using a stethoscope because it provides the most accurate representation of heartbeats. It is taken by placing the stethoscope over the apex of the heart, typically located at the fifth intercostal space, which allows for direct listening to the heart's sounds. This pulse is valuable, especially in clinical settings, as it helps healthcare providers assess the heart rate and rhythm, confirming the efficacy of cardiac function.

In contrast, the brachial, temporal, and radial pulses are typically palpated with fingers rather than auscultated. Each of these pulses corresponds to arteries that can be easily accessed superficially, allowing for a quick evaluation of circulatory status without the need for a stethoscope. Therefore, for auscultation purposes, the apical pulse is the designated option, as it requires auditory assessment of cardiac activity.