Answer:
Prefix: circum-
Meaning: C) to follow a course all the way around the globe
Explanation:
The prefix circum- signifies about or around. Therefore, the verb circumnavigate has to do with sailing all the way round something or guide along a route, typically over water, especially to travel around the world.
The resst of the alternatives are incorrect because they do not match the meaning of the prefix circum-, which implies all sides of something.
