Introduction:
The Sinthan Pass is a mountain pass located in the Kashmir region of Jammu and Kashmir, India. It is situated at an elevation of around 3,748 meters (12,297 feet) above sea level. The pass is known for its scenic beauty and connects the Kashmir Valley with the Chenab Valley.

Explanation:
The correct answer to the question is option 'C', which states that the Sinthan Pass connects Kashmir to the Chenab Valley. Let's understand why this is the correct answer:

1. Location:
The Sinthan Pass is located in the Kishtwar district of Jammu and Kashmir. It lies between the Kashmir Valley and the Chenab Valley.

2. Connectivity:
The Sinthan Pass serves as a crucial route that connects the Kashmir Valley (located in the Kashmir region) to the Chenab Valley (located in the Jammu region). It acts as a link between these two regions, providing a passage for transportation and trade.

3. Importance:
The Sinthan Pass is of great strategic and economic significance. It facilitates the movement of people, goods, and services between the Kashmir Valley and the Chenab Valley. It also plays a vital role in the development of the remote and inaccessible areas of the Chenab Valley by connecting them to the rest of the state.

4. Scenic Beauty:
Apart from its functional importance, the Sinthan Pass is renowned for its breathtaking beauty. The route offers mesmerizing views of snow-capped peaks, lush green meadows, and pristine valleys. It attracts tourists and adventure enthusiasts who visit the region to witness its natural splendor.

Conclusion:
In conclusion, the Sinthan Pass connects Kashmir to the Chenab Valley. It serves as a vital link between the Kashmir Valley and the Chenab Valley, facilitating transportation, trade, and development. Additionally, it is known for its scenic beauty and attracts tourists from all over the world.