Answer: stimulus
The students reaction is explained by the theory of classical conditioning first coined by Ivan Pavlov. The students are conditioned to associate the doer closing with the pop quiz and respond accordingly. Pavlov used dogs and their response to ringing a bell every time their food was served, after a some conditioning the dogs would salivate at the sound of the bell regardless of whether or not food was present. The bell was the stimulus.
When a behavior management plan is put into place, and behavior issues arise, it is important to revisit or revise the rule and procedures of the plan, and if it is needed do never things in the plan.
Answer:
Explanation:
The Marshall Plan was a post WWII bailout program initiated by the USA, aimed to economically revive nations and to reduce communist influence within the countries it supported. The USSR refused to be included for differing political views and opted to create a similar program of their own to aid in post war economic recovery. The USSR before it collapsed, included the countries who are not aided today.

Indian Standards Institute.
