Adventure sports enthusiasts can enjoy activities like these in Sikkim:

River rafting on the Teesta
Paragliding
Mountain biking
All of the above

The correct answer is: d) All of the above.

Sikkim is a state in northeastern India that is known for its natural beauty and its opportunities for adventure sports. Some of the most popular adventure sports in Sikkim include river rafting, paragliding, and mountain biking.

River rafting is a popular activity on the Teesta River, which is one of the most popular rivers for rafting in India. The Teesta River is a Class III to Class IV river, which means that it is suitable for experienced rafters.

Paragliding is another popular activity in Sikkim. There are several places in Sikkim where paragliding is possible, including the town of Gangtok and the Nathula Pass. Paragliding is a great way to see the stunning scenery of Sikkim from above.

Mountain biking is also a popular activity in Sikkim. There are several mountain biking trails in Sikkim, ranging from easy to difficult. Mountain biking is a great way to explore the forests and mountains of Sikkim.

In addition to these three activities, there are many other adventure sports that can be enjoyed in Sikkim. These include trekking, hiking, rock climbing, and camping. Sikkim is a great place for adventure sports enthusiasts of all levels of experience.