Cannot is formal, while can't in informal.
"Cannot" and "can not" are interchangeable, but when you are asking question for example:
"why can't I...", you can also say "why can I not..." (which is more formal), but you can't say "why cannot I..."
A young boy named ...
Once Upon a Time, there was a boy named ...
The boy learned a valuable lesson today ...
The little boy wandered through the woods...
Not sure what you were looking for buy I did my best. I hope this helps.
it would be A because at the end it says man and fire.
