Measurements expressed as kiloliters or liters are examples of which type of metric unit

Capacity, but typically of some type of liquid.

The answer should be a.

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.