Explanation:

About the project

• The Coastal Highway project will link Gopalpur in Odisha and Digha of West Bengal.
• Digha-Gopalpur coastal highway would act as an economic corridor between the two major ports of Paradip and Dhamra.
• The coastal highway project, announced by Union Road Transport and Highways in April 2015, spreads over 415 kilometres from Gopalpur to Digha.
• As per the proposal, this 451-km-long coastal highway will be named as 516-A.
• Besides facilitating transportation of agri goods and fishery products, the coastal highway would play a crucial role in the supply chain during natural calamities like cyclones and floods.

Hence option 2nd is correct.