Answer:
Ideas, biography or autobiography, personal experiences, and humor.
Step-by-step explanation:
A non-fiction can be defined as a piece of work that is not based on imagination but rather it is instructional and based on true events or happenings. A non-fiction comprises of real places, people, and events. These texts contain facts.
There are two types of non-fiction: literary nonfiction and informative non-fiction.
The major topics that are used to write any non-fiction are ideas, biography and autobiography, personal experiences, and humor.
Some examples of nonfiction are The Diary of A Young Girl, Unbroken: A World War II Story of Survival, Resilience, and Redemption, etc.