Lalgudi Gopala Iyer Jayaraman used to play which of the following instruments?

Violin

The correct answer is Option (4) - Violin

Lalgudi Gopala Iyer Jayaraman was a renowned Indian classical musician known for his mastery of the violin. He was a prominent figure in Carnatic music and made significant contributions to the development and popularization of the violin as a solo instrument in Indian classical music.