In the context of Atiyoga of Shirovirechana (excessive practices of head therapy like nasal therapy or head treatments), the following therapies are mentioned:
- Akshi Arti is a valid therapy for Shirovirechana to help in alleviating problems in the eyes.
- Shankha Arti and Shravana Arti are valid practices used in Shirovirechana for balancing energies in the head.
- Nasa Arti, however, is not a recognized practice in the context of Atiyoga of Shirovirechana according to Charaka.
Thus, the correct answer is (2).