Final answer:
During blood pressure measurement, the cuff is inflated to occlude the brachial artery, not deflated. Listening for Korotkoff sounds occurs during deflation, which corresponds to systolic and diastolic pressures.
Step-by-step explanation:
During the measurement of blood pressure, the occurrence at the radiographer controlling arterial tension with the sphygmomanometer is A) Inflation of the cuff to occlude the brachial artery. This is the first step, where the clinician wraps an inflatable cuff tightly around the patient's arm and inflates the cuff with a rubber pump to temporarily cut off blood flow. After inflation, the process continues with listening for Korotkoff sounds during the deflation of the cuff. The first Korotkoff sound corresponds to the systolic pressure, and the point at which the last sound is heard is recorded as the diastolic pressure. Palpation of the radial pulse or recording diastolic pressure while inflating the cuff is not part of the standard procedure for measuring blood pressure.