Contribution limits apply to which of the following?

Contribution limits primarily apply to party committee contributions because the Federal Election Commission (FEC) regulates the amounts that can be contributed to political parties to ensure fairness and transparency in campaign financing. These limits are designed to prevent excessive influence by any single entity or individual on the political process.

Individual donations also have contribution limits, but in the context of campaign finance, party committee contributions are particularly scrutinized due to the role they play in supporting candidates and influencing elections at various levels. Corporate sponsorships are not subject to the same direct contribution limits, as corporations may support political activities through different means, like independent expenditures, which are not capped in the same way.

Therefore, the correct answer focuses on the specific regulatory framework governing party committee contributions, highlighting the importance of these limits in maintaining electoral integrity.