What are thematic maps used for in GEOINT?

Thematic maps are specifically designed to represent particular topics or themes within a geographic area. This means that they focus on displaying a single variable or a collection of related data, which assists in visualizing patterns and trends relevant to that specific theme. Thematic maps can portray a wide range of information, such as economic statistics, land use, climate data, and public health information.

While it is true that options like analyzing traffic patterns in urban areas, displaying population density data, and illustrating historical geographical changes can all be accomplished using thematic maps, the primary definition of thematic maps emphasizes their use for particular themes or topics across geographic contexts. Thus, the clarity of purpose in option B aligns perfectly with the fundamental purpose of thematic maps in the field of GEOINT.