What is the MOST likely reason for media outlets to impose self-censorship?

A) to compete with online blogs and underground publications
B) to avoid outside regulation by the government
C) to protect children
D) to increase subscriptions

Media outlets would most likely impose self-censorship to avoid outside regulation by the government, which could result in censorship that limits their freedom of expression. This would also help maintain their editorial independence and credibility with their audience. While protecting children and increasing subscriptions may be additional factors, they are less likely to be the primary drivers for self-censorship. And competition with other media outlets would actually suggest a need to be more bold and distinctive in their reporting, rather than self-censoring.