Political scientist: One of the most interesting dilemmas in contemporary democratic politics concerns the regulation of political campaign spending. People certainly should be free, within broad limits, to spend their money as they choose. On the other hand, candidates who can vastly outspend all rivals have an unfair advantage in publicizing their platforms. Democratic governments have a strong obligation to ensure that all voices have an equal chance to be heard, but governments should not subsidize expensive campaigns for each candidate. The resolution of the dilemma, ttherefore, is clear: __. Which one of the following most logically completes the political scientist's argument? ['all wealthy persons should be prohibited from spending their own money on political campaigns', 'only candidates with significant campaign resources should be permitted to run for public office', 'an upper limit on the political campaign spending of each candidate is warranted', 'government subsidization of all political campaigns at a low percentage of their total cost is warranted']