Answer:
A. Advise the president on any matter he needs information; oversee their departments.
Step-by-step explanation:
The Cabinet Secretary is an important position in the organization of the White House. The Cabinet secretary is particularly important due to the services that it offers to the president. The Cabinet Secretaries are responsible of advising the president on any necessary matter. This is because they operate as the liaison between the President and the Cabinet departments. Moreover, they are responsible for overseeing their departments, and for coordinating policy and communication within these.