Which historical figure fought alongside Cato the Elder at Sardinia and celebrated Scipio Africanus' victory?

The correct answer is Ennius, who is often referred to as the father of Roman poetry. He was known for his epic works and significant contributions to Roman literature. Ennius fought alongside Cato the Elder during the campaign in Sardinia, which underscores his involvement in both military and cultural aspects of Roman life.

Ennius is also celebrated for his appreciation of Scipio Africanus' victory at the Battle of Zama, which was pivotal in the Second Punic War. This victory not only solidified Scipio's reputation but also had lasting implications for Rome's expansion as a dominant power in the Mediterranean.

This context places Ennius in a dual role as both a soldier participating in historical events and a literary figure who shaped the cultural narrative of those events, distinguishing him from the other choices. The other figures mentioned, while significant in their own right, are not directly associated with the particular historical events or context that Ennius exemplifies. Cato the Elder, though a key figure at Sardinia, does not fit the description of being celebrated for Scipio's victory, as this specifically pertains to Ennius and his literary contributions.