Option a is the correct answer Tamsoma Jyotirgamaya is a Sanskrit verse taken from the "Pavana Mantra" from the great Brihadaranyaka Upanishad. The mantra Tamsoma Jyotirgamaya got its existence as a mantra or a prayer that was recited as the introductory praise of the Soma Sacrifice. In Sanskrit, "tamas" means "darkness" and "jyotir" means "light", which makes the literal meaning of this phrase as, "From darkness, lead me to light." Important Tips The Pavana Mantra, also known as Pavamana Abhyaroha is a mantra that originated in ancient India from the key scripture of various schools of Hinduism. Brihadaranyaka Upanishads The Brihadaranyaka Upanishads are the earliest and the principal Upanishads of Hinduism. This Upanishad is the basic structure for most of the schools for Hinduism. It is basically an exposition to Atman or inner self spirit or soul. The Upanishad includes various passages on ethics, metaphysics, philosophy, psychology, and the history of medieval scholars.