Ever since giving birth to her second child, jing is no longer able to orgasm during intercourse. she is able to orgasm during masturbation and she used to be able to orgasm through intercourse. how would her problem likely be classified?

Her problem would likely be classified as SECONDARY AND SITUATIONAL.
A situational problem refers to a type of problem that develop as a result of the situation the affected person find itself while a secondary problem refers to a problem that is non existent before but which occur after a particular time or event. An example of a secondary problem is a man's inability to father a baby again after having some children before even though he is still at the reproductive stage.

Sector is best defined as (part).

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.