Religious ceremonies in Sikkim often feature the playing of:

Conch shells
Long Tibetan trumpets
Bamboo flutes
All of the above

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

Religious ceremonies in Sikkim often feature the playing of conch shells, long Tibetan trumpets, and bamboo flutes. These instruments are used to create a sacred atmosphere and to invoke the blessings of the gods.

Conch shells are a symbol of purity and auspiciousness in Hinduism and Buddhism. They are blown to announce the start of a religious ceremony and to ward off evil spirits.

Long Tibetan trumpets are made of brass or copper and are often decorated with intricate designs. They are blown to create a loud, booming sound that is said to represent the voice of the Buddha.

Bamboo flutes are a traditional instrument in Sikkim and are often played during religious ceremonies. They are said to represent the human voice and are used to express devotion and praise to the gods.

The playing of these instruments is an important part of religious ceremonies in Sikkim. They create a sacred atmosphere and help to invoke the blessings of the gods.