Answer:
a. Negative reinforcement
Step-by-step explanation:
The answer is
a. Negative reinforcement
By negative reinforcement, it means to remove a negative habit or behavior of a person to strengthen a result. It must not be confused with punishment.
When Ms. Latimer told her fifth grade students that she will shorten their group task time by getting into groups quickly. And complete the task in ten-minute schedule she has planned, she used the method of Negative reinforcement to make the students cooperate in the group task.
Thus the answer is a. Negative reinforcement.