40. the work of ptolemy which was used by christopher columbus as the map of the world was: a. "the great treatise b. "mathematical treatise c. "apotelesmatika" d. "tetrabiblos" e. "geography

Option E.

Explanation:

Geography, is the right answer.

Written around AD 150 by Claudius Ptolemy, the Geography is an atlas, a gazetteer and treatise on cartography, organizing the cartographic principles of the 2nd-century Roman Empire. Columbus used this work as a world map. However, during the course of time, he revised this geography farther by using 53⅔ Italian naval miles as the measure of a standard rather the higher degree of Ptolemy.