Which three topics became a major focus of the enlightenment?

I believe the Enlightenment period was also called the Age of Reason.

1. science- tying to understand the natural world and the reason why humanity was on earth without incorporating religion.

2. philosophy- writers who  looked at occurring events and tried to explain the causes of them through reasoning

3. Literature

4. The Arts- music paintings

Hopefully this helps somewhat. The Enlightenment  era was during the 17th and 18th century. I think the easiest way of explaining this era, it's really complex, is that it was an era in which people questioned things such as events, behaviors, or whatever by using science instead of religion.