What is the name of the sacred river in Hindu mythology that is said to flow underground at Prayagraj?

lieved to be the remnant of the ancient Saraswati. Option A (“Sutlej”) is incorrect because it does not match the river basin, lake type, location, tributary relationship, project or hydrological feature specified in the question. Option B (“Gomti”) is incorrect because it does not match the river basin, lake type, location, tributary relationship, project or hydrological feature specified in the question. Option D (“Son”) is incorrect because it does not match the river basin, lake type, location, tributary relationship, project or hydrological feature specified in the question. Therefore the correct option, index and explanation consistently identify Saraswati. The Saraswati River is the mythological river said to flow underground at Prayagraj (Triveni Sangam). The Saraswati is one of the most sacred rivers in Hindu scriptures (Rigveda). Modern geology suggests the ancient Saraswati dried up around 1900 BCE. The Ghaggar-Hakra River system in northwest India is believed to be the remnant of the ancient Saraswati.