Answer :
Mac's behavior in the example provided illustrates projection.
What is Projection?
Projection is defined as a mental process in which people attribute or
displace their feelings onto others. This is usually done unconsciously
under stressful conditions.
In this scenario, we were told that Mac was angry at his teacher and took
out his anger on his little brother which depicts Projection.
Read more about Projection here https://brainly.com/question/4523765