The term "itinerant" primarily refers to someone who:

The term "itinerant" primarily refers to someone who is constantly traveling, often for the purpose of work or service. This word is derived from the Latin "itinerare," which means "to journey." It is typically used to describe individuals who do not have a fixed residence and move from place to place, such as itinerant workers, who travel to various locations to perform their jobs.

In this sense, the definition encompasses those who are on the move, often in search of employment opportunities or to provide services in different areas, further emphasizing their transient lifestyle. Understanding this context clarifies the connection between the term and frequent movement.

The other options do not align with the definition of "itinerant." For instance, someone who does not work at all would not fit into the concept of traveling for work. Similarly, making frequent mistakes relates to errors and does not connect to the theme of travel, while being overly devoted to a belief focuses on commitment, not movement. Thus, B is the most accurate choice.