The correct answer is (b), Rakhigarhi.
Rakhigarhi is a Harappan archaeological site located in the Hisar district of Haryana, India. It is one of the largest Harappan sites discovered so far, covering an area of over 300 hectares. The site was first excavated in 1953 by the Archaeological Survey of India. Further excavations were conducted in 1963, 1964, and 1965.
The site is divided into two main areas: the citadel and the lower town. The citadel is located on a high mound and is surrounded by a massive fortification wall. The lower town is located on a lower level and is less well-preserved.
The site has yielded a rich variety of artifacts, including pottery, terracotta figurines, seals, and beads. The pottery from Rakhigarhi is similar to that found at other Harappan sites, and it is decorated with geometric patterns and animal motifs. The terracotta figurines from Rakhigarhi depict a variety of human and animal figures. The seals from Rakhigarhi are inscribed with Harappan script, and they depict a variety of animals, including elephants, rhinoceroses, and tigers. The beads from Rakhigarhi are made of a variety of materials, including carnelian, agate, and lapis lazuli.
The site of Rakhigarhi provides important insights into the Harappan civilization. It is one of the largest Harappan sites discovered so far, and it has yielded a rich variety of artifacts. The site is still under excavation, and it is likely to yield even more information about the Harappan civilization in the future.
The other options are:
(a) Lothal: Lothal is a Harappan archaeological site located in the Bharuch district of Gujarat, India. It is one of the most well-preserved Harappan sites, and it is known for its dockyard, which is one of the earliest known examples of a man-made harbor.
(c) Dholavira: Dholavira is a Harappan archaeological site located in the Kutch district of Gujarat, India. It is one of the largest Harappan sites discovered so far, and it is known for its well-preserved fortifications, water management system, and granaries.
(d) Mohenjo-daro: Mohenjo-daro is a Harappan archaeological site located in the Larkana district of Sindh, Pakistan. It is one of the most well-known Harappan sites, and it is known for its well-preserved city planning, public buildings, and drainage system.