Concept:
We use the classical acoustic taxonomy of the four organological instrument groups (Chaturvidha Vadya Varg) to classify each specific instrument in List-II:
• Avanaddha Vadya (Percussion with membrane): Instruments covered with skin or leather membranes. Panav (पणव) is an ancient hourglass-shaped ritual drum mentioned in early treatises.
• Sushir Vadya (Wind instruments): Instruments that produce sound using a column of vibrating air. Sundari (सुंदरी) is a traditional double-reed wind instrument similar to a smaller, higher-pitched Shehnai, popular in Maharashtra.
• Tat Vadya (Stringed instruments): Instruments that produce sound via vibrating stretched strings or wires. The Ektara (एकतारा) is a famous single-string drone instrument widely used by folk minstrels and Sufi singers.
• Ghan Vadya (Solid Ideophones): Instruments made of solid metal or wood that resonate without a membrane. Jhanjh (झांझ) refers to large classical metallic clash cymbals used to maintain steady structural rhythms during large-scale devotional gatherings.
Step 1: Match each classification group with its correct instrument.
• A. Percussion (Avanaddha) matches with II. Panav.
• B. Wind (Sushir) matches with III. Sundari.
• C. String (Tat) matches with I. Ektara.
• D. Ideophone (Ghan) matches with IV. Jhanjh.
This yields the sequence: A-II, B-III, C-I, D-IV. This matches option (D).