Which of the following is a way a bill can become a law without the President's signature? a.
The President delegates the signing of a bill to the Vice President.
b.
The President waits until the Congress is not in session.
c.
The President fails to act on the bill within 10 days of receiving it while Congress is in session.
d.
The President leaves the country.

can you explain it better

an informal structure in a bureaucracy would be something like so-called "office politics". where there's a formal structure set up for the organization, but then an informal subculture as well that has a way of organizing the bureaucracy further. this can be positive because it sets up an added degree of organization, albeit informal, within the bureaucracy.