Thetakudi Harihara Vinayakram, an Indian percussionist, is known for popularising which of the following musical instruments?

Ghatam

The correct answer is Option (3) - Ghatam

Thetakudi Harihara Vinayakram, an Indian percussionist, is renowned for popularizing the Ghatam, a traditional clay pot drum used in Carnatic music. His exceptional skill and contributions have played a significant role in elevating the profile of the Ghatam both within India and internationally, making it a more widely recognized and appreciated musical instrument.