Question

what is a key difference between pacs and super pacs?
pacs can contribute directly to candidates, but super pacs cannot
super pacs are much more likely to support incumbent candidates than are pacs
conservative interests favor pacs over super pacs
contributions to pacs are unlimited, but restrictions have been placed on how much money can be contributed to super pacs

Explanation:

PACs (Political Action Committees) are allowed to contribute directly to candidates within certain legal limits. Super PACs (Independent Expenditure - Only Committees) are prohibited from contributing directly to candidates. They can only engage in independent political expenditures, such as running ads.

Answer:

PACs can contribute directly to candidates, but super PACs cannot.