HSA 2006 Government Item 57

Which of these best explains why candidates for public office often spend more money on advertising during the last week of a campaign?

1. Advertising costs are lower at the end of a campaign.
2. Advertising may persuade undecided voters to make a choice.
3. Campaign laws require that all money raised by candidates be spent.
4. Campaign laws require that advertising be restricted to the end of a campaign.