Option b is the correct answer. Pair 1 is incorrectly matched: The Painted Grey Ware is associated with the middle and later Vedic period and the early Iron Age in northern India. Harrapan civilization is associated with Black and red Ware. Pair 2 is correctly matched: The Kushans were patrons of the Gandhara School of Art. This school flourished in the Gandhara region, encompassing parts of present-day Afghanistan and Pakistan. It produced sculptures and reliefs primarily focused on Buddhist themes, blending Greek and Indian artistic elements, with iconic examples like the Bamiyan Buddha statues. Pair 3 is incorrectly matched: The Ajanta Paintings, dating back to ancient India (2nd century B.C.E. to 650 C.E), primarily depict themes from Buddhist stories and were created long before the Mughal era, by Vakatakas The Mughal dynasty, known for its own distinct art, ruled during the medieval period in India. Pair 4 is incorrectly matched: The Pahari School of Painting flourished in the hilly regions of northern India, especially during the Rajput and later Sikh periods, whereas the Marathas were a distinct political power in a different geographical area.