For how many years does Commentarii de Bello Gallico cover Caesar's campaigns?

Commentarii de Bello Gallico, written by Julius Caesar, details his military campaigns in Gaul from 58 BC to 50 BC. This work spans a total of eight years, but when considering the years that are specifically covered within the text itself, it primarily documents events from 58 BC through 52 BC, making a total of six years of active campaigning.

While some might think seven years could be a possibility depending on interpretation, the chronological events as described in the text conclude in 52 BC, marking the end of major Gallic military operations led by Caesar. The subsequent years involve political maneuvers and the lead-up to the Roman Civil War rather than battles in Gaul, which Caesar’s accounts predominantly focus on. Therefore, the correct understanding of the duration covered in Commentarii de Bello Gallico is six years of campaigns, aligning with option C.