Which of the following is considered the earliest known Marathi literary work?
Gathasaptasati
The Gathasaptasati (Gaha Sattasai), compiled by the Satavahana king Hala around the 1st–2nd century CE, is a collection of 700 verses in Maharashtri Prakrit, the language from which Marathi developed.
Because of this, it is regarded as the earliest known literary work associated with the Marathi language tradition.
Lilacharitra (13th century, by Mhaimbhat) is the first prose biography in Marathi, Jnanesvari (1290 CE) is Sant Dnyaneshwar’s commentary on the Gita, and Dipavamsa is a Pali chronicle of Sri Lanka.
Hence, Gathasaptasati.