Which of the following contains the famous Gayatri Mantra?

The Gayatri, also known as the Savitri mantra, is a highly revered mantra from the Rig Veda, dedicated to Savitr, the sun deity. Gayatri is the name of the Vedic meter in which the verse is composed. Its recitation is traditionally preceded by oṃ and the formula bhur bhuvaḥ svaḥ, known as the mahavyahṛti, or "great (mystical) utterance". Vishvamitra is said to have created the Gayatri mantra.