The correct answer is Mumbai and Mangalore.
The Konkan Railway is a 760-kilometer (470 mi) long railway line in India that runs along the western coast of the country. It connects the states of Maharashtra, Goa, Karnataka, Kerala, and Tamil Nadu. The railway was built between 1990 and 1998 and is one of the most challenging railway projects ever undertaken. The railway line passes through some of the most difficult terrain in India, including the Western Ghats mountain range. The Konkan Railway is a vital link for the people of the Konkan region and has helped to improve the economic development of the region.
The other options are incorrect because they do not connect Goa to Mumbai and Mangalore.
- Chennai and Hyderabad are connected by the South Central Railway.
- Delhi and Jaipur are connected by the Northern Railway.
- Kolkata and Bhubaneswar are connected by the East Coast Railway.