Option 1: Chidambaram - Chidambaram is a town in Tamil Nadu, located about 170 kilometers away from Indira Gandhi Centre for Atomic Research. While it is relatively close in distance, option 2 is even closer.
Option 2: Mahabalipuram - Mahabalipuram is a coastal town in Tamil Nadu, located approximately 60 kilometers away from Indira Gandhi Centre for Atomic Research. This option is the correct answer as it is the nearest option to the research center.
Option 3: Madurai - Madurai is a major city in Tamil Nadu, but it is quite far from the Indira Gandhi Centre for Atomic Research. It is located almost 400 kilometers away from the research center.
Option 4: Tanjavur - Tanjavur is also a city in Tamil Nadu, but it is not close to the Indira Gandhi Centre for Atomic Research. It is situated around 180 kilometers away from the research center.
In conclusion, Mahabalipuram is the closest option among the given choices to the Indira Gandhi Centre for Atomic Research.