Explanation:

Coastal states of India:
India is a large country with a coastline that stretches over 7,500 kilometers. It is bordered by the Arabian Sea in the west, the Bay of Bengal in the east, and the Indian Ocean in the south. Several states in India are located along the coastline, but one of them, Madhya Pradesh, is not close to the coast.

Coastal states:
1. Kerala: Located in the southwestern part of India, Kerala is a coastal state that is bordered by the Arabian Sea. It is known for its beautiful beaches, backwaters, and coconut groves.

2. Tamil Nadu: Situated in the southern part of India, Tamil Nadu is also a coastal state that shares its border with the Bay of Bengal. It is famous for its temple architecture, classical music, and dance forms.

3. Karnataka: Another coastal state in southern India is Karnataka. It is located between the Arabian Sea and the Western Ghats. Karnataka is known for its diverse culture, historical monuments, and beautiful beaches like Gokarna and Karwar.

Non-coastal state:
4. Madhya Pradesh: Unlike the other three states mentioned above, Madhya Pradesh is a landlocked state located in central India. It does not have a coastline and is surrounded by other states.

Importance of coastal states:
Coastal states in India have significant economic, cultural, and environmental importance. They contribute to the country's maritime trade, fishing industry, tourism, and provide access to important ports. These states also possess unique coastal ecosystems and are home to various marine species.

Conclusion:
In conclusion, among the given options, Madhya Pradesh is the state that is not close to the coast. The other states mentioned, Kerala, Tamil Nadu, and Karnataka, are all coastal states in India.