Angelica is 3 years old and says frequently that she wants to "marry daddy." according to the psychoanalytic theory, this is a manifestation of:

This is a manifestation of the Elektra copmlex.

Is this multiple choice?

I believe the answer is Electra complex.
If it was a boy that wants his mother, that would be the Oedipus complex, but maybe Oedipus complex applies to girls too according to Freud.

Sigmund Freud came up with these theories.

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.