The correct answer is B) Spirit of Laws.
The Enlightenment idea that Jefferson is expressing in this quote is "Spirit of Laws."
"The Spirit of Laws" was a book or treatise published by the French philosopher and thinker Baron of Montesquiou in 1748. It is considered to be a foundation of government laws and principles that citizens support to have good rulers. That is why Thomas Jefferson included some of these ideas in the Declaration of Independence, drafted by him and other four prominent founding fathers: Roger Sherman, Benjamin Franklin, Robert Livingston, and John Adams.
Montesquiou was one of the many philosophers and thinkers that influenced the founding fathers. Other great thinkers from the Enlightenment were Voltaire, Jean-Jaques Rousseau, John Locke, and Thomas Hobbes.