The correct answer is (b), Costa Rica. Costa Rica has the highest percentage of land protected in the world, at over 25%. The country has a long history of environmental protection, and its protected areas include a wide variety of ecosystems, from rainforests to volcanoes. Costa Rica is also a leader in sustainable tourism, and its protected areas are a major draw for visitors.
Option (a), China, has a large number of protected areas, but they cover a relatively small percentage of the country’s land area. Option (c), India, also has a large number of protected areas, but they are not as well-managed as those in Costa Rica. Option (d), Switzerland, has a relatively small number of protected areas, but they are well-managed and cover a significant percentage of the country’s land area.