The correct answer is B. B. B. Lal.
B. B. Lal was an Indian archaeologist who is best known for his work on the Indus Valley Civilization. He was the first archaeologist to excavate the site of Harappa, which is one of the most important sites of the Indus Valley Civilization. He also excavated the site of Mohenjo-daro, which is another important site of the Indus Valley Civilization.
A. Cunningham was a British archaeologist who worked in India in the 19th century. He is best known for his work on the Buddhist sites of India.
C. H. L. Srivastava was an Indian archaeologist who worked in the 20th century. He is best known for his work on the Gupta period sites of India.
D. D. D. Snooper is not a real person.