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.
The answer you're looking for is C:)
Psychologists will most likely diagnose Katie with Social Phobia.
<span>Social Phobia is a type of disorder that make people experience unreasonable fear toward interractions with other people.
</span>Having this tend to make people with social phobia to overthinking every single situation which tend to result in self-fulfilling phropecy.
Because it would be the right thing to do at that time
