Telangana’s primary source of revenue is:

Income tax
Property tax
State GST (Goods and Services Tax)
Central grants

The correct answer is: C) State GST (Goods and Services Tax).

State GST is a tax levied on the supply of goods and services within a state. It is levied by the state government and collected by the state government. The revenue from State GST is used by the state government to fund its various activities, such as education, health, infrastructure, and social welfare.

Income tax is a tax levied on the income of individuals and businesses. It is levied by the central government and collected by the central government. The revenue from income tax is used by the central government to fund its various activities, such as defense, security, infrastructure, and social welfare.

Property tax is a tax levied on the value of property. It is levied by the local government and collected by the local government. The revenue from property tax is used by the local government to fund its various activities, such as education, health, infrastructure, and social welfare.

Central grants are grants given by the central government to the state governments. The grants are given for various purposes, such as development, poverty alleviation, and disaster relief. The revenue from central grants is used by the state government to fund its various activities.