In Hinduism, Behagavad-Gita is the name of the epic poem where the god Krishna teaches a prince about duty.
Assuming that the other options are epic of Gilgamesh (which isn't a part of Hinduism, but of Sumerian culture), Ramayana (which is about prince Rama and his wife Sita against the demon king Ravana) and Vedas (which is a religious text in Hinduism, not an epic poem).