Final answer:
Option A, consisting of a prison, monastery, and boot camp, is the correct answer as all these are examples of total institutions where individuals are isolated from society and live a controlled lifestyle.
Step-by-step explanation:
The question which asks, 'which of the following groups consists solely of total institutions?' refers to the concept of total institutions as described by sociologist Erving Goffman. A total institution is a place where people are isolated from the rest of society and lead a formally administered, controlled lifestyle, often for the purpose of resocialization. Examples include prisons, monasteries, military boot camps, and concentration camps. Keeping this in mind, option A (prison, monastery, boot camp) is the correct answer, as each of these examples fits the definition of a total institution where inhabitants live a regulated life and are cut off from wider society.