The students may be afraid that giving an honest opinion of the teacher will affect them which implies that Mr. Wilson is a bad teacher. option B is correct.
The source of bias that occurs when a group of students is asked to evaluate their teacher mid-quarter is a perceived lack of anonymity.
Perceived lack of anonymity occurs when the responder is afraid that if they give an honest answer, it can end up affecting them negatively.
In this case, the students may be afraid that giving an honest opinion of the teacher will affect them.
So, this implies that Mr. Wilson is a bad teacher. option B is correct.
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