Which is an example of following an explicit expectation

Question

Quizplus · Accepted Answer

Turning on a turn signal before turning your car is following an explicit expectation, as it is a specific rule of the road that is taught during driver's education and enforced by law. The other options are either a social expectation (speaking with better grammar when addressing authority figures) or a personal preference (wearing makeup in the same style as a close friend, lifting your pants leg before crossing a puddle).

Which Is an Example of Following an Explicit Expectation