" are unconscious, taken-for-granted perceptions or ideal prototypes of behavior that are considered the correct way to think and act toward problems and opportunities."

The correct answer is Shared assumptions

Basic Shared Assumptions are assumptions assumed to be true after confirmed, in various situations as the best solution. In a group, their performances, and the way of perceiving, are always the ones that are pressured, are affected by changes, which, although often printable, are difficult to use due to the comfort and stability that it brings.

The Organizational Culture itself is formed by basic assumptions shared among its members, and has a fundamental role so that there is not a confrontation between the possible divergences between them, but rather the reinforcement and sum, making the Organizational Culture reaffirmed.

is there a year set? the question is incomplete