The correct answer is: a) Flooding.
Mizoram is a state in northeastern India that is located in the foothills of the Himalayas. The state has a tropical climate with a monsoon season that lasts from June to September. During the monsoon season, heavy rains can cause flooding in some parts of the state. In 2018, for example, heavy rains caused widespread flooding in Mizoram, displacing thousands of people and causing millions of dollars in damage.
The other options are incorrect because they are not common weather events in Mizoram. Heatwaves are more common in the northern states of India, while sandstorms and blizzards are not common in any part of India.
Flooding is a serious problem in Mizoram because the state is located in a mountainous region with a lot of rainfall. The heavy rains can cause rivers to overflow their banks and inundate low-lying areas. Flooding can also damage infrastructure, such as roads and bridges, and make it difficult for people to get around.
The government of Mizoram has taken some steps to mitigate the risk of flooding, such as building dams and reservoirs to control the flow of water. However, more needs to be done to protect people and property from flooding.