I think "family ties" is the correct answer.
Twain is informing people aboutn how young kids are being pushed to do things they dont want to do. As in peer preasure, cleanrly this young boy should not be smoking or chewing tabacco but he tries because of the people laughing at him about not being able to chew tabacco. Mark Twain is conveying a former problem that we still have but do not acknowledge anymore. This happening will not just affect an individual, but everyone around.
It usually depends on what English teacher / class you have. I think you have to do (Last name, First Name, Book Name, City (if given), and Year) or maybe less depending on what your teacher ideally wants. Your teacher should clarify this and if they complain about this format, blame them for not teaching their preference to you. The period probably would be after the parenthesis, at the very end. Hope this helps
