The correct answer is (b), Canada. Canada has a coastline of 202,080 kilometers (125,567 mi), which is longer than the coastlines of India (7,517 km), Australia (25,760 km), and Brazil (7,491 km).
Canada’s coastline is so long because it is a large country with a long coastline on three oceans: the Pacific Ocean, the Atlantic Ocean, and the Arctic Ocean. The country also has many islands, which add to the length of its coastline.
India’s coastline is shorter than Canada’s because it is a smaller country with a shorter coastline on the Indian Ocean. Australia’s coastline is shorter than Canada’s because it is a smaller country with a shorter coastline on the Pacific Ocean. Brazil’s coastline is shorter than Canada’s because it is a smaller country with a shorter coastline on the Atlantic Ocean.