Answer:variable - interval
Explanation: In the this scenario, The humanities instructor is using a variable-interval schedule of reinforcement. The instructor used the word 'surprise' meaning the time and date of the test isn't fixed and the quizzes will come up at unpredictable time intervals. This kind of reinforcement results in a steady response rate as it keeps students on their toes simply due to the fact that they have no idea of when the quizzes are coming up.
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The crime category is called crimes of omission.
Crimes of omission is an offence that is categorized by<em> a person's failing to perform an act that is required or is seen as that person's legal duty. </em>
Some examples of crimes of omissions are child neglect, manslaughter by gross negligence and failure to disclosure terrorists acts.
Another example: a person who is aware of a dangerous situation such as a house on fire in progress, can face criminal charges for not notifying authorities.
Answer:
The answer is C progressive
The Progressive Era is defined by reform of all the following: political parties, big businesses, labor practices.
Explanation:
Answer: Secretive.
Explanation: The character of the described paragraph is a person who, looking for something eagerly, something that he considers as yours and that, however, if seen by others, would be taken from him, shows decision in his task, and precision in his act, since the last thing he wants is to be observed, detected in his intention.