Answer:
A. Charles de Montesquieu
Step-by-step explanation:
The Enlightenment thinker and French politician, Charles-Louis de Secondat (also named Baron de Montesquieu), was the one that established and promoted the idea that the government should be separated into three different branches: the legislative, the executive, and the judicial; all of which should rule under the law and must check each other’s power in order to prevent corruption and abuses of power.