Which issue was a cause of the french
revolution?
(1) ineffective rule of napoleon bonaparte
(2) nationalization of the church
(3) outrage over the use of the guillotine by the
committee of public safety
(4) demand of the third estate for more political
power

(4) Demand of the Third Estate for more political power.

Napolean Bonaparte ruled France after the French Revolution was over. The Church was nationalized and the Committee of Public Safety used the guillotine during the French Revolution. So none of these could have been the cause of the revolution. The French Revolution however, was a revolution for the Third Estate, the common people. They wanted a voice in government and equality, therefore the last choice is the correct one.