In the united states, schoolchildren are taught to stay quiet until the teacher calls on them, and to regulate their activities according to clocks or bells. this learning experience is an aspect of

The hidden curriculum, is the right answer.

Explanation:

The hidden curriculum is a theory which explains the often unarticulated and unresponsive things students are taught in school and which can make some impact on the learning experience of the students. Such curriculum are generally unspoken and intended teachings irrelevant to the academic programs they're practicing — things acquired from just being in school.

in 342 bc j._c. egypt fell into the hands of the persians, under the reign of nectanebo ii

greek city-states unite in a revolt against the persian empire at the beginning of the fifth century bc. j.-c  

from the year 660 or 659 bc ad, cyrus preached the revolt against the medes to deliver the persians.

"choosing is refusing" means individuals face an opportunity cost with each decision they make. economists state that every decision involves trade-offs. opportunity cost is the least desirable alternative given up as a result of a decision.