The correct answer is: a) Education index.
Meghalaya’s literacy rate is an important component of its education index because it is a measure of the level of education in the state. A high literacy rate indicates that a large proportion of the population has access to education and is able to read and write. This is important for the state’s development, as it means that there is a large pool of skilled workers who can contribute to the economy.
The other options are incorrect because they are not directly related to education. The income index is a measure of the state’s economic output, the life expectancy index is a measure of the state’s health, and the tourism index is a measure of the state’s attractiveness to tourists.