What term describes the procedure to permanently block the fallopian tubes?

The procedure designed to permanently block the fallopian tubes is referred to as tubal ligation. This surgical method is commonly employed as a means of permanent contraception. In this procedure, the fallopian tubes are cut, tied, or blocked to prevent the ovum from reaching the uterus for fertilization, thus ensuring that pregnancy cannot occur.

Given that this choice directly relates to the anatomy and reproductive functions involved, it is the appropriate term. The other options, while related to various medical procedures, do not pertain to the fallopian tubes or the subject of contraception. Systole refers to the phase of the heartbeat when the heart muscle contracts, carotid endarterectomy is a surgery aimed at reducing the risk of stroke by correcting stenosis in the common carotid artery, and gastric bypass surgery is aimed at weight loss by altering the digestive system. Each of these terms relates to a different aspect of health and medicine, affirming that tubal ligation is the correct choice based on its relevance to the question asked.