The correct answer is (c). The level of urbanization in Mizoram is relatively low. In 2020, the urban population of Mizoram was 22.2%, which is lower than the national average of 34.7%. The main reason for this is that Mizoram is a mountainous state with a relatively small population. The majority of the population lives in rural areas, where they are engaged in agriculture and other traditional occupations. There are a few small towns and cities in Mizoram, but they do not have a large population.
Option (a) is incorrect because the level of urbanization in Mizoram is not very high. The urban population of Mizoram is only 22.2%, which is lower than the national average of 34.7%.
Option (b) is incorrect because the level of urbanization in Mizoram is not moderately high. The urban population of Mizoram is only 22.2%, which is lower than the national average of 34.7%.
Option (d) is incorrect because the level of urbanization in Mizoram does exist. The urban population of Mizoram is 22.2%, which is lower than the national average of 34.7%, but it does exist.