The answer is D. Ghana.
Ranthambor, Sunderban, and Kaziranga are all national parks in India, while Gangtok is the capital of the Indian state of Sikkim. Ghana is a country in West Africa.
Ranthambor National Park is a tiger reserve in the Indian state of Rajasthan. It is one of the most popular tourist destinations in India, and is home to a variety of wildlife, including tigers, leopards, elephants, and deer.
Sundarban National Park is a mangrove forest in the Indian state of West Bengal and the Bangladesh Sundarbans. It is the largest mangrove forest in the world, and is home to a variety of wildlife, including tigers, crocodiles, and dolphins.
Kaziranga National Park is a national park in the Indian state of Assam. It is home to the world’s largest population of one-horned rhinoceroses, as well as tigers, elephants, and deer.
Gangtok is the capital of the Indian state of Sikkim. It is a popular tourist destination, and is known for its beautiful scenery and its Tibetan Buddhist culture.