The money that the state government takes in is called revenue. which of these sources provides the greatest percentage of revenue to meet the state's needs?

I do not know what the options you are referring to are, but

"The individual income tax has been the largest single source of federal revenue since 1950, amounting to 46 percent of the total and 8 percent of gross domestic product (GDP) in 2014." -Tax Policy Center

It should be at the center of any map going vertically: the prime meridian, as it passes through greenwich,  england, is considered 0 degrees longitude