Explanation:

- Dr. N Rajam is a renowned Indian violinist, known for her contributions to Hindustani classical music.

- Option 1: Veena - The veena is a traditional Indian string instrument, distinct from the violin.

- Option 2: Guitar - A guitar is a different string instrument, widely used in Western music.

- Option 3: Violin - The violin is known for its versatility and is used in both Western and Indian classical music. Dr. N Rajam is famous for playing the violin with a unique style in Indian classical music.

- Option 4: Flute - The flute is a woodwind instrument, unrelated to string instruments like the violin.

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