The correct answer is option 'A', Mintaka Pass.

Mintaka Pass is the mountain pass that is present in the tri junction of India-China-Afghanistan border. It is strategically located in the easternmost part of the Wakhan Corridor, which is a narrow strip of territory in Afghanistan that separates Tajikistan from Pakistan. The pass lies at an elevation of approximately 5,800 meters (19,000 feet) and is one of the highest motorable passes in the world.

Now, let's delve into some key points about Mintaka Pass:

1. Location:
- Mintaka Pass is situated in the Pamir Mountains, which are a part of the greater Himalayas.
- It is located in the northeastern region of Afghanistan, near the border with China and India.
- The pass connects the Wakhan Corridor in Afghanistan with the Taxkorgan Tajik Autonomous County in China's Xinjiang region.

2. Historical Significance:
- Mintaka Pass has been an important trade route for centuries, connecting Central Asia and the Indian subcontinent.
- It was a part of the historic Silk Road, which facilitated the exchange of goods, ideas, and cultures between East and West.
- The pass has witnessed the movement of caravans, traders, and armies throughout history.

3. Strategic Importance:
- Due to its location at the tri junction of India, China, and Afghanistan, Mintaka Pass holds significant strategic value.
- It offers a potential route for trade and connectivity between these three countries and beyond.
- The pass also has military significance, as it allows access to border areas and can serve as a potential corridor for military movements.

4. Challenges and Opportunities:
- The harsh terrain, extreme weather conditions, and high altitude make the crossing of Mintaka Pass challenging.
- However, the pass presents opportunities for economic development and regional integration.
- Efforts have been made to improve infrastructure and connectivity in the region, including the construction of roads and bridges.

In conclusion, Mintaka Pass is the mountain pass present in the tri junction of India-China-Afghanistan border. Its strategic location, historical significance, and potential for trade and connectivity make it an important area of interest for these countries and the wider region.