Meghalaya has a significant population of people who practice:

Traditional indigenous religions
Sikhism
Jainism
Zoroastrianism

The correct answer is: a) Traditional indigenous religions.

Meghalaya is a state in northeastern India. It is the wettest place on Earth, with an average annual rainfall of over 11,871 mm (467 in). The state is home to a number of different ethnic groups, including the Khasi, Garo, and Jaintia peoples. The Khasi and Garo peoples are the largest ethnic groups in the state, and they practice traditional indigenous religions.

Sikhism is a religion that originated in the Punjab region of India in the 15th century. It is a monotheistic religion that teaches the equality of all people. The founder of Sikhism is Guru Nanak Dev Ji. The holy book of Sikhism is the Guru Granth Sahib.

Jainism is a religion that originated in India in the 6th century BCE. It is a non-theistic religion that teaches the importance of non-violence, compassion, and vegetarianism. The founder of Jainism is Mahavira. The holy book of Jainism is the Agamas.

Zoroastrianism is a religion that originated in Persia in the 6th century BCE. It is a monotheistic religion that teaches the importance of truth, good thoughts, good words, and good deeds. The founder of Zoroastrianism is Zoroaster. The holy book of Zoroastrianism is the Avesta.

In conclusion, the correct answer to the question “Meghalaya has a significant population of people who practice:” is a) Traditional indigenous religions.