The Bhupen Hazarika Setu (Dhola-Sadiya Bridge) connects Arunachal Pradesh to:

Assam
Nagaland
Bhutan
Myanmar

The Bhupen Hazarika Setu (Dhola-Sadiya Bridge) connects Arunachal Pradesh to Assam. It is a 9.15 km long bridge over the Brahmaputra River, and is the longest river bridge in India. The bridge was opened in 2017, and has significantly reduced travel time between the two states.

Option a: Assam is the correct answer. The Bhupen Hazarika Setu (Dhola-Sadiya Bridge) connects Arunachal Pradesh to Assam.

Option b: Nagaland is incorrect. The Bhupen Hazarika Setu (Dhola-Sadiya Bridge) does not connect Arunachal Pradesh to Nagaland.

Option c: Bhutan is incorrect. The Bhupen Hazarika Setu (Dhola-Sadiya Bridge) does not connect Arunachal Pradesh to Bhutan.

Option d: Myanmar is incorrect. The Bhupen Hazarika Setu (Dhola-Sadiya Bridge) does not connect Arunachal Pradesh to Myanmar.