Answer : 3. "Gujarat"
Explanation :

Gujarat government is going to start the country's first submarine tourism. This project has been started around Bet Dwarka, a small island off the coast of Dwarka city. For this, Gujarat Government has joined hands with Mazgaon Dock Limited (MDL). This project is likely to start before Diwali 2024. The weight of this tourist submarine will be approximately 35 tons and its capacity will be to carry 30 passengers.