Why do inside directors often dominate outsiders on a boyard of directors?

a$.$ They have intimate knowledge of the company's operations, and because superior knowledge and control over information are sources of power.

b$.$ Insiders can use their position within the management hierarchy to exercise control over the companyspecific information that the board receives.

c$.$ All of these are reasons why inside directors often dominate outsiders on a board of directors.

d$.$ They may be better positioned than outsiders to influence boardroom decision making.

e$.$ They can present information in a way that puts them in a favorable light.