You are teaching a science lesson and notice that desiree has her hairbrush out. you just know she's going to begin using it at any minute, so you give her "the look," silently communicating that she should put it away. you have handled the situation without interruption to your lesson. which of kounin's classroom management skills have you exhibited?

Withitness

Explanation:

Jacob Kounin postulated 5 classroom management skills which are; withitness, overlapping, momentum, smoothness, and group focus.

Withitness has to do with a classroom teacher's ability to know what is going on the class. This is achieved by the teacher constantly scanning the class to create an impression that he or she is fully aware of what is going on the class.

The look from the teacher notifies Desiree that he or she is aware of what Desiree is about to do and to stop it.

explanation:

with the profits from the european sales, merchants purchased europe's manufactured  goods, including tools and weapons. then the merchants shipped those manufactured  goods, along with the  american  sugar and rum, to west africa where they were bartered for  slaves.

answer; collective security;