Answer:
Correct answer is:
Many people began to use reason and observation in studying the world.
Philosophers sought ways to make society better.
Political thinkers concluded that government is a contract between ordinary people and a ruler.
Step-by-step explanation:
Only first option is not correct as this refers to the Crusades that happened in the Middle Ages.
Reason was in the focus of the Enlightenment and therefore science was highly appreciated.
Philosophers, especially those in France insisted on the improvement of the society. Therefore Locke discussed about so-called social contract.