Correct option is B
Harappa is one of the most well-known sites of the Harappan Civilization. However, it is located in Punjab, Pakistan, not in Sindh. Therefore, Harappa is not in Sindh.
Mohenjodaro is one of the largest and most significant Harappan cities and is located in Sindh, Pakistan, near the banks of the Indus River. It is famous for its well-planned streets, drainage systems, and advanced urban planning.
Chanhudaro is another important Harappan site located in Sindh, Pakistan. It is known for its evidence of bead-making, shell-cutting, and other crafts.
Sukotda (or Sutkagan Dor) is located in Gujarat, India, not in Sindh. It is one of the southernmost Harappan sites and was an important trading post during the Harappan period.