Which logical fallacy is used in the text?
Don't ever get a ride from Ava. Her brother has been driving for only six months, and he's already gotten three speeding tickets.

 - guilt by association: a negative association intended to discredit someone or something
 - appeal to nature: the assumption that natural things are always good
The text argues that Ava must be a reckless driver, because her brother is a reckless driver. However, even though Ava's brother is reckless, that doesn't necessarily mean that Ava is, too. This illustrates a type of logical fallacy known as guilt by association.