Which of the following prefixes refers to organs generally located in the body cavity?

The prefix that refers to organs generally located in the body cavity is "viscer-." This term is derived from the Latin word "viscera," which pertains to the internal organs, particularly those within the abdominal cavity. It is commonly used in medical terminology to describe conditions, procedures, or anatomical references related to the internal organs collectively, as seen in terms like "visceral pain" or "visceral fat." This prefix encompasses a broad category of organs rather than being specific to one type or system.

In contrast, "hepato-" specifically relates to the liver, "procto-" pertains to the rectum or anus, and "gastro-" refers to the stomach. Each of these prefixes describes specific organs or regions rather than the general internal organs. Therefore, "viscer-" is the most fitting choice for describing organs found within the body cavity.