The correct answer is D. All of the above.
Lothal was an ancient port city of the Indus Valley Civilization, located in the Banni region of the Kutch district in the Indian state of Gujarat. It is one of the five largest Harappan sites, and is known for its well-preserved dock, granary, and other civic features.
Lothal was excavated by S. R. Rao between 1952 and 1960. The site was occupied from about 2400 to 1900 BCE, and reached its peak during the Mature Harappan period (2600-1900 BCE).
Lothal was an important trading center, and its location on the Gulf of Cambay gave it access to both the Arabian Sea and the Indus River Valley. The city was also a major center of craft production, and its artisans produced a variety of goods, including pottery, metalwork, and jewelry.
Lothal was abandoned around 1900 BCE, and its decline is thought to be due to a combination of factors, including environmental changes, political instability, and foreign invasion.
Today, Lothal is a UNESCO World Heritage Site, and is open to the public as an archaeological park.