Who has the most consistent access to the president? the council on economic advisors the white house office staff the cabinet the national security advisors the secretary of state?

The white house office staff
 
the staffs of the white house has become the principal  presidential aides in the last few decades. The president often appoints these officials to facilitate his office from the closest of confidantes. As a result they are very close to the president.

The answer is option c.

That really sucks, but i don't know who your leader is, and i don't want to write that much