Correct Answer : Vishwamitra
Maharshi Vishvamitra had created the Gayatri mantra. The Gayatri mantra is cited widely in Vedic and post-Vedic texts, such as the mantra listings of the Åšrauta liturgy, and classical Hindu texts such as the Bhagavad Gita, Harivamsa, and Manusmá¹›ti.