Final answer:
A 5-letter word for a book of maps is atlas (option A).
Step-by-step explanation:
A book of maps is commonly referred to as an "atlas" (option A). The term "atlas" is derived from the mythological figure Atlas, who was often depicted carrying the heavens on his shoulders. In the context of cartography, an atlas serves as a comprehensive collection of maps, providing geographical and often thematic information.
An atlas typically includes maps of different regions, countries, continents, or specific themes such as climate, population, or topography. It is a valuable resource for reference, education, and exploration, offering a visual representation of the world or a particular subject. Atlases come in various formats, from traditional printed books to digital versions, enhancing accessibility and functionality for users.