Yes looks like it is correct grammar
Research can be used to prove something true is tell factual info about something! Research is conducted in a wide variety of topics from illnesses to animals etc.
Answer: Basically the start of a story
Explanation:
An exposition sets the story up by introducing all the characters and the setting of the story. It will also introduce the conflict of the story.
It may also provide some insight into the background of the characters
The word "a" would come first.
