What defines a tourist according to Theobald’s definition of tourism?

Theobald defines a tourist as a visitor traveling outside their usual environment. This definition emphasizes the key aspect of tourism, which involves a change of location and context. A tourist is someone who leaves their familiar surroundings, often to explore new places, engage in different cultural experiences, and participate in leisure activities. This definition encapsulates the essence of tourism as it is inherently linked to the act of travel and the exploration of destinations that deviate from one's everyday life.

In contrast, the other choices fail to capture this essential idea. Staying in one’s usual environment does not constitute tourism since it lacks the element of travel. Similarly, local residents enjoying leisure activities do not fit the criteria of a tourist if they are not traveling outside their home areas. Finally, business travel, while it may involve similar logistical aspects, does not align with the broader definition of tourism if the traveler's purpose is solely occupational rather than recreational. Thus, the correct choice reflects the fundamental nature of tourism as involving travel beyond one's usual environment.