The reference should have been included: title or description of its document, details of publication or retrieving, and Internet addresses, that is a legal URL or standard resource locator. Its Internet may not always be trustworthy. It is perhaps less reliable than dependable. If would have believed them if someone said that on the internet "2 +2 = 6," so you would.
The setting of a narrative explains the time and/or place in which the story takes place. In sentence 2, (“The floor of the garage was covered in grease stains, and he was only adding to the mess.”) it describes the garage which is the place that this takes place in. I hope this helps you :)
