What are the coordinates of the point on the directed line segment from ( − 4 , − 1 ) (−4,−1) to ( 6 , 4 ) (6,4) that partitions the segment into a ratio of 3 to 2?

C. To control both unintentional research bias and participant prior beliefs

Step-by-step explanation:

Double blinding is a type of study where neither the participants nor the researchers know the treatment or intervention that the participants receive until the whole study/research is completed. This is very important because it means that the results gotten from the study have a very slim chance of being biased.

Thus,the correct answer is option C as it includes both the researcher and the participants