The correct answer is: a) Buddhist monastic communities.
The concept of ‘Sangha seats’ in the Sikkim Assembly aims to ensure representation for Buddhist monastic communities. The Sangha is the Buddhist monastic community, and it is one of the three pillars of Buddhism, along with the Buddha and the Dharma. The Sangha is made up of monks, nuns, and laypeople who have taken vows to follow the Buddhist path.
The Sangha seats were created in 1974, after Sikkim became a state of India. The seats are reserved for Buddhist monks and nuns, and they are elected by the Buddhist community in Sikkim. The Sangha seats are important because they ensure that the Buddhist community has a voice in the government of Sikkim.
The other options are incorrect because they do not represent the Buddhist monastic community. The Bhutia-Lepcha communities are the indigenous people of Sikkim, and they make up about 20% of the population. The Nepali majority population makes up about 50% of the population, and they are the largest ethnic group in Sikkim. Migrant labor communities are people who have moved to Sikkim from other parts of India in search of work.