Explanation:

Prime Minister of India will flag off eight trains connecting different regions of the country to Kevadiya on 17th January, 2021.

• These trains will facilitate seamless connectivity to the Statue of Unity, located on the Narmada River in the Kevadiya, Gujarat.
• Prime Minister will inaugurate the Dabhoi – Chandod Gauge converted Broad Gauge railway line, Chandod – Kevadiya new Broad Gauge railway line, newly electrified Pratapnagar – Kevadiya section and the new station buildings of Dabhoi, Chandod and Kevadiya.
• Kevadiya station is India's first railway station with a Green Building Certification.

Hence option 4th is correct.