The correct answer is C. Markanda.
Dadhichi was a sage who lived in the Markanda River valley. He is known for his sacrifice of his bones, which were used to create the Vajra, a powerful weapon used by Indra, the king of the gods.
The Saraswati River is a sacred river in Hinduism. It is said to have originated from the hair of Vishnu, the god of preservation. The Yamuna River is another sacred river in Hinduism. It is said to have originated from the feet of Vishnu. The Markanda River is a tributary of the Yamuna River. It is said to have originated from the sage Markandeya. The Tangri River is a tributary of the Markanda River. It is said to have originated from the sage Tangri.
Dadhichi’s hermitage was situated on the banks of the Markanda River. This is because the Markanda River is a sacred river and is said to be a place of great power. Dadhichi was a powerful sage and it is said that he chose to live on the banks of the Markanda River because he wanted to be close to the source of its power.