Option 1: Salem is not considered as the best planned city in India. It is a city in Tamil Nadu known for its rich history and textile industry. However, in terms of urban planning and infrastructure development, it is not widely recognized.

Option 2: Chandigarh is the correct answer and widely regarded as the best planned city in India. It was designed by Swiss-French architect Le Corbusier after the partition of India in 1947. Chandigarh is known for its well-planned sectors, wide roads, abundant green spaces, and efficient urban infrastructure.

Option 3: Coimbatore is another city in Tamil Nadu that is known for its industrial development, but it is not considered the best planned city in India.

Option 4: New Delhi is the capital city of India and while it has several well-planned areas, it is not considered the best planned city in the country.

In summary, Chandigarh is widely recognized as the best planned city in India.