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.
Postponement warehousing is a form of warehousing that combines classic warehouse operations with light manufacturing and packaging duties to allow firms to put off final assembly or packaging of goods until the last possible moment
<h3><u>Explanation:</u></h3>
Postponement warehousing involves modifications that can be done in the entire supply chain management line until the last moment when the product would be delivered. The manufacturer at the beginning creates a generic product and moves it forward for modifications as required or demanded by the end user or customer.
In such cases customization is more prevalent and risk is minimized as current investment into a product or service is delayed until the last resort. Some of its types can be, labeling, packaging, manufacturing and time postponements.
Answer: AD (Anno Domini) is Latin for "in the year of the Lord" referring to the birth of Jesus Christ.