Statuses.
They are a position a person occupies in a society. Essentially one's role in society.
The inclusion of these participants most directly indicates that the experiment involves a control group, and an active drug that they need to compare the results to.
Waterways<span> are critically </span>important<span> to the transportation of people and goods .</span>
<span>Great Britain, Africa, New England, Virginia, and North Central.</span>
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