How many books make up Ab Urbe Condita?

Ab Urbe Condita, written by the Roman historian Livy, consists of a total of 142 books. This monumental history covers the founding of Rome and its history up to Livy's own time, detailing not only dates and events but also offering insights into the moral and civic values of Rome. Livy's work had a significant influence on Roman literature and has provided invaluable historical documents for subsequent generations.

The other options do not accurately reflect the number of books written by Livy. The texts often discuss historical chronicles, but none of the alternative numbers align with Livy's recognized compositions, which is firmly established at 142 books.