If a participant begins a study but fails to complete it, then that participant is a(n) .

I believe the answer is: Dropout

In research environment, a dropout describes the subjects who fail to fulfil the programs that created by the researchers from the beginning to the end. This would made every data that taken from the subject become inadmissible to make the research conclusion.

we need a diagram to you sorry

answer; ///(c) i believe that the correct answer is ethnic relations bear many similarities across different global; good luck