The correct answer is (c) 7516.6 Km.
India has a coastline of 7,516.6 km, which is the seventh longest in the world. The coastline is bordered by the Arabian Sea to the west, the Bay of Bengal to the east, and the Indian Ocean to the south. The coastline is home to a variety of ecosystems, including beaches, mangrove forests, and coral reefs. It is also a major economic region, supporting a variety of industries, including fishing, tourism, and shipping.
Option (a) is incorrect because it is the length of the coastline of the United States. Option (b) is incorrect because it is the length of the coastline of China. Option (d) is incorrect because it is the length of the coastline of Brazil.