Explanation:

- TH Vinayakram is renowned for playing the Ghatam, a traditional Indian percussion instrument that is essentially a clay pot.

- The Dholak is a two-headed hand drum commonly used in South Asian music, particularly in folk and classical forms.

- The Sarod is a stringed instrument, prominent in Indian classical music, known for its deep, resonant sound.

- The Tabla comprises a pair of hand-played drums popular in Hindustani classical music and other genres.

- Option 4: Ghatam is the correct answer as TH Vinayakram is celebrated for his exceptional skills on this instrument.