Over the past 20 years, interest groups and individual companies have worked to find ways to support candidates through campaign donations, . A) while candidates have tried to distance themselves from these groups and companies to avoid the appearance of having been “bought” by the group or company

B) but candidates have chosen to decline these campaign donations because accepting public money appears more ethical to voters

C) but Congress continues to pass laws that have steadily increased the restrictions that limit the contributions that groups and companies contribute to candidates

D) while candidates have become dependent of on these donations to run increasingly expensive campaigns

D. while candidates have become dependent of on these donations to run increasingly  expensive campaigns

Explanation:

The financial help provided by interest groups massively increase the chance of a political candidate to win an election. The money mostly used to create series of campaigns that increase the popularity of the candidates (through hiring door-to-door canvasser, advertising board, TV appearances, etc)

This made a lot of candidates become dependent of on these donations to run increasingly  expensive campaigns.

But , this come with a massive downside. The interest groups do not give those donations for free. After the candidates win, the interest groups expected those candidates to pass laws that beneficial for the interest groups.

answer; eliminate parking problems in cities, because a car took up only half as much space as a horse and buggy;