Explanation:
the spontaneous or unplanned expulsion of a fetus from the womb before it is able to survive independently.
"his wife had a miscarriage"
I would say its false because i feel like they have more catergories than just stress
<span>In randomized controlled trials, people are randomly assigned to each category to offset any potential bias.
</span>Selection bias<span> is the phenomenon where</span><span> the </span>selection<span> of people or groups is not adequately randomized to offset potential bias in research studies. This in turn does not ensure that the study samples included in research are representative of the population needed to be tested on.</span>
Money is something that could effect a child or young people