Which work by Seutonius focuses on the lives of significant authors?

The chosen work, "De Viris Illustribus," is indeed focused on the lives of significant authors and illustrious men, making it the correct answer. In this text, Suetonius provides biographical sketches of notable figures in Roman history, including writers and poets. The work is a compilation of various authors' lives, their contributions to literature, and their impact on Roman culture.

This collection serves as a valuable resource for understanding the literary landscape of ancient Rome, highlighting the achievements and significance of these authors. The style of Suetonius blends historical detail with anecdotal evidence, offering insights into the character and works of each featured individual.

In contrast, other works like "De Vita Caesarum" specifically concentrate on the lives of the Roman emperors rather than authors or literary figures. "De Grammaticis" pertains to grammarians and their contributions to the study of language, while "De Historici" would focus on historians instead of authors. Therefore, "De Viris Illustribus" stands out as the ideal choice for a text dedicated to significant literary figures.