What was the main belief of Enlightenment thinkers?

1. that governmental power should be limited
2. that a republic was the best form of government
3. that the use of reason was vital to improving society
4. that a government should be strong enough to carry out its duties

3. that the use of reason was vital to improving society

The main belief of Enlightenment thinkers was:

3. that the use of reason was vital to improving society.

The main belief of Enlightenment thinkers was that the use of reason was vital to improving society.

To arrive at this answer, we can analyze each option and determine which one aligns with the main belief of Enlightenment thinkers.

1. That governmental power should be limited: While Enlightenment thinkers did advocate for limiting governmental power, this is not the central belief that defines their philosophy. It is more of a consequence of their belief in the importance of reason and the idea that unchecked governmental power can be detrimental to individual liberties.

2. That a republic was the best form of government: While some Enlightenment thinkers did believe that a republic, or a representative democracy, was the best form of government, this belief was not universal among all Enlightenment thinkers. Additionally, this belief is more focused on the specific form of government rather than the broader belief in the use of reason.

3. That the use of reason was vital to improving society: This option accurately represents the main belief of Enlightenment thinkers. They emphasized reason, logic, and empirical evidence as essential tools for understanding and improving the world. They believed that through the application of reason, society could progress and overcome ignorance, superstition, and oppression.

4. That a government should be strong enough to carry out its duties: While Enlightenment thinkers did recognize the need for a strong government to fulfill its duties, this belief is secondary to their emphasis on reason as the key to societal improvement.

Therefore, option 3, that the use of reason was vital to improving society, is the correct answer that aligns with the main belief of Enlightenment thinkers.