<h2>Answer:</h2><h3>The Enlightenment included a range of ideas centered on the sovereignty of reason and the evidence of the senses as the primary sources of knowledge and advanced ideals such as liberty, progress, toleration, fraternity, constitutional government and separation of church and state.</h3>
The body gives reasons because it is where you give evidence and reasoning. The introduction just introduces a topic while a the thesis does the same. The conclusion ends the writing so the only logical answer is the body.