The Dzukou Valley, a trekking destination, lies on the border between Manipur and:

Mizoram
Assam
Nagaland
Myanmar

The correct answer is: c) Nagaland.

The Dzukou Valley is a high-altitude valley located in the Naga Hills of northeastern India. It is a popular trekking destination, and is known for its beautiful scenery and its unique flora and fauna. The valley lies on the border between the Indian state of Manipur and the Nagaland state of India.

The other options are incorrect because:

  • Mizoram is a state in northeastern India that is located to the south of Manipur.
  • Assam is a state in northeastern India that is located to the west of Manipur.
  • Myanmar is a country in Southeast Asia that is located to the east of Manipur.