Who among the following Indian music directors introduced Western tunes in the Hindi film industry, who was popularly known as ‘Pancham Da’?

Rahul Dev Burman

The correct answer is Option (4) - Rahul Dev Burman

Rahul Dev Burman, popularly known as 'Pancham Da', introduced Western musical elements into Hindi film music. He revolutionized the industry with his innovative compositions, blending various genres to create memorable tunes that are still celebrated today.