The most important problems with corporate codes of conduct are:

A) Content and enforcement
B) Publicity and content
C) Too few participating employers and enforcement
D) Complexity and publicity

The content of a corporate code of conduct is important because it outlines the standards and expectations for behavior within a company. However, if the code is not enforced, it becomes meaningless. Therefore, both content and enforcement are key concerns with corporate codes of conduct. While publicity and participation are also important, they are not as fundamental as having a well-written code that is actually enforced. Complexity can also be a challenge, but is not as critical as ensuring that the content and enforcement are effective.