What do you like about the Noah and Flood story as told in the book of Genesis?
Personally, I love the fact that it has alot of detail and that it provides chronological information.
What do you like about it?
I'm sure the question is supposed to elicit what YOU LIKE about the story, not anyone else.
Your sentence is fine, but it's only a beginning. You have not included any details to explain what you mean by "alot of detail" -- and note that it's spelled "a lot" not "alot."
Are you supposed to write a paragraph?