The procedure that experimenters need to use to make sure that participants in both the treatment and control groups are not aware of the purpose of the experiment is known as the

to plan an idea out before

to stay where they were until m sent for

the declaration states, “we hold these truths to be self-evident, that all men are created equal, that they are endowed by their creator with certain unalienable rights, that among these are life, liberty, and the pursuit of happiness….”