Answer:
Hair Color I'm pretty sure lol
Answer:
Double blind study
Explanation:
A double-blind investigation is one in which neither the members nor the one performing the experiments realize who is getting a specific treatment.
This method is used to counteract inclination in research results.
Double blind examinations are especially helpful for anticipating predisposition because of interest qualities or the placebo impact.
Hey how long are the videos and how much do you have to write for each video
<span>i am pretty sure it is clinical trial</span>