The correct answer is: a) One of the wettest states in India.
Mizoram receives an average annual rainfall of 2,500 mm, making it one of the wettest states in India. The state is located in the northeast of India, and its climate is tropical monsoonal. The monsoon season runs from June to September, and during this time, the state receives most of its rainfall. The high rainfall makes Mizoram a lush and green state, with a variety of plant and animal life.
Option b) is incorrect because Mizoram is not a semi-arid region. Semi-arid regions are characterized by low rainfall, and Mizoram receives an average annual rainfall of 2,500 mm.
Option c) is incorrect because Mizoram is not prone to frequent droughts. The state receives an average annual rainfall of 2,500 mm, and droughts are not a common occurrence.
Option d) is incorrect because Mizoram is not ideal for desert vegetation. The state receives an average annual rainfall of 2,500 mm, and desert vegetation is adapted to low rainfall conditions.