Answer:
This is an example of a technique called Maintenance rehearsal.
Explanation:
Maintenance rehearsal refers to the time when one repeats information over and over again. Person does this to memorize that information in his brain. Short-term memory part of the brain uses this technique in which it stores information for sometime and then forgets it.
In the given example, counselor is learning the names of the children during each meal time for three days. HE does this to memorize the names and keep them in his brain safe. This is Maintenance rehearsal.