Final answer:
The author shows bias by using emotionally charged language and presenting opinions as facts, which reveals a negative attitude toward politicians and corruption.
Step-by-step explanation:
The author of the passage on the topic of corruption and ethics reform within the government shows bias by using opinions disguised as facts. This is evident through the use of emotionally charged language, such as describing politicians as 'slimy' and talking about the 'filthy swamp,' which conveys the author's negative attitude without presenting a balanced viewpoint or evidence. The specific example given in the passage, that of a state representative being caught accepting gifts from a lobbyist, is used to reinforce the author's perspective on the prevalence of corruption.