Final answer:
PACs tend to show a preference for candidates for Congress who have power and influence, including incumbents and members of relevant committees.
Step-by-step explanation:
PACs, or political action committees, tend to show a preference for candidates for Congress who have power and influence. They often prioritize incumbents, as well as chairs and members of congressional committees and subcommittees who have a say in policies relevant to the interests of the PAC. For example, in the case of Enron, many members of Congress who were investigating the accounting scandals had received campaign contributions from Enron or its accounting firm, Arthur Andersen.