The largest source of revenue for the Karnataka government:

Corporate tax
Income tax
Sales tax/GST
Property tax

The correct answer is C) Sales tax/GST.

Sales tax is a tax levied on the sale of goods and services. It is a major source of revenue for the government, as it is collected from businesses that sell goods and services to consumers. The GST is a value-added tax (VAT) that is levied on the supply of goods and services. It is a comprehensive tax that is levied on the value added at each stage of the production and distribution process. The GST is a major source of revenue for the government, as it is collected from businesses that supply goods and services to consumers.

Corporate tax is a tax levied on the profits of corporations. It is a major source of revenue for the government, as it is collected from corporations that make a profit. Income tax is a tax levied on the income of individuals. It is a major source of revenue for the government, as it is collected from individuals who earn an income. Property tax is a tax levied on the value of real property. It is a major source of revenue for the government, as it is collected from individuals who own real property.

In the case of Karnataka, the largest source of revenue is sales tax/GST. This is because Karnataka has a large population and a strong economy. The state has a number of major industries, including information technology, manufacturing, and agriculture. These industries generate a lot of revenue, which is collected through sales tax/GST.