Why might a state tourism office use a road map in its brochures?

to show areas of the state that get the best weather
to show boundaries of different counties in the state
to show areas of the state to avoid because of crime
to show points of interest where visitors can go

to show points of interest where visitors can go

Explanation:

a road map does not show crime or weather.  It does show boundaries but tourists are looking for points of interest

D). To show points of interest where visitors can go.

Explanation:

A road map is primarily employed as a communication/navigation tool that displays the links between the roads and transport.

As per the question, a state tourism office would use a road map in its brochures 'to show points of interest where visitors can go' as it would assist in promoting the tourism(by providing information about the links that would assist the visitors to navigate more conveniently) at a particular geographical location. Thus, option D is the correct answer.