Final answer:
Among the occupations listed, a tour guide clearly belongs to the service sector. Construction crew members fall under the secondary sector and farmers under the primary sector, while garbage truck drivers can be considered part of the service sector due to their role in waste management services.
Step-by-step explanation:
The service sector, or tertiary sector, encompasses a wide range of occupations that involve providing services rather than producing goods. Among the options provided, a tour guide clearly falls under the service sector as they are directly involved in the tourism industry, offering services through guiding and educating tourists.
However, when looking at the list given:
- Construction crew member - Typically part of the secondary sector as they are involved in constructing buildings and infrastructure.
- Tour guide - A service sector occupation related to entertainment and tourism.
- Garbage truck driver - Also generally considered a service sector job because they provide waste removal services to the community.
- Farmer - Part of the primary sector as they are directly involved in the production of food.
In the context of present economic activities in the US, while most jobs now lie within the service sector, construction crew members and farmers represent the secondary and primary sectors, respectively, which focus on the production of tangible goods. It's also worth noting that service sector jobs can range widely in terms of necessary training and wage potential.