Answer:d----frustration-aggression principle.
Explanation:frustration-aggression principle is a principle that describes violent behaviors due to accumulated feelings of anger over time leading to transfer of aggressive behavior to things or individuals not related to the cause of frustration.
For example, Tanya has over time been frustrated due to heavy traffic experienced on a daily basis, and because she cannot take out the aggression on the traffic, directs and pours out her frustration and acts aggressively towards her children and husband for irrelevant matters by slamming the door and constantly yelling.
Explanation:
Contamination can have undesirable consequences in real experiments, some of them are related to the feelings that may arise in the research participants, the contamination bias reduces the differences between the research groups, and can cause a comparison between the treatments of each different group, the which can generate conflicts and rivalries on the part of groups that consider themselves to be inferior to others. These contamination-related problems can significantly interfere with the research results.
prevent african americans from gaining equality. they enforced racial segregation
Measure the lakes and see what happens next
