Which logical fallacy is used in the text?
Victor is not qualified to run the Environmental Club. Have you seen his sister's huge, horrifically inefficient car? The planet cries whenever she turns on the ignition.

 - guilt by association: a negative association intended to discredit someone or something
 - slippery slope fallacy: the false assumption that a small first step will lead to extreme consequences
 - false dichotomy: an argument that presents only two choices when more options exist
The text argues that Victor isn't qualified to run the Environmental Club because his sister drives a fuel inefficient car. However, the behavior of Victor's sister does not necessarily reflect Victor's own behavior. This illustrates a type of logical fallacy known as guilt by association.