The answer would be the W-2 Form
The W-2 form is consisted of Wage and tax statement. Every employer whose businesses are performed by employees must filled an w-2 form that consist of : income , social security, or medicare taxes witheld
Multiple choice or open ended?
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.