The correct answer is: d) All of the above
Tamang, Gurung, and Sherpa are all minority languages spoken in Sikkim. They are all Tibeto-Burman languages, and they are all spoken by people who live in the Himalayan region.
Tamang is the most widely spoken minority language in Sikkim. It is spoken by about 20% of the population. Tamang is a tonal language, which means that the pitch of your voice can change the meaning of a word.
Gurung is the second most widely spoken minority language in Sikkim. It is spoken by about 15% of the population. Gurung is a non-tonal language, which means that the pitch of your voice does not change the meaning of a word.
Sherpa is the third most widely spoken minority language in Sikkim. It is spoken by about 10% of the population. Sherpa is a tonal language, like Tamang.
All three of these languages are important parts of the cultural heritage of Sikkim. They are used in everyday life, and they are also used in literature, music, and art.