Which reform measure could voters use if they wanted to change a law about taxes?

Who are the cabinet member of the Philippines at present? What are the names of Nunavut's current leaders? What is the Automated Barangay Information System? What is Newt Gingrich's IQ? What English measure did king Henry I define as the distance from his nose to his thumb? What is the current price of platinum in the Philippines? Who is the president in 2017? Why does communism not work? Can there be a king and queen at the same time? Nomme les 5 parties politiques du Canada? Are woman politically active in Athens or US? What purpose do bead caps serve? The instition of political socialization that incubates political attitudes the next step beyond the immediate family is your what? What is the reaction of the prisoners who stayed inside the cave when the prisoner who left the cave returns and tells them what he has seen outside the cave? Who came to the throne after Edward VI died? What rights did the English bill of rights give to the people? Where does the right to rule come from in the theories of the divine right of the kings natuaral law and social contract? Which major political party in the US has adopted a bureaucratic structure? What was the historical significance of Bernard M Baruch? Which leader is a fascist - Mussolini or Stalin?

Which reform measure could voters use if they wanted to change a law about taxes?