Answer:
<em>guilty knowledge test</em>
Explanation:
<em>Guilty knowledge test:</em> The guilty knowledge test is also denoted as GKT, and is referred to as the psycho-physiological questioning technique which is being utilized as a part of the polygraph examination that assesses the suspects in terms of concealing guilty knowledge through measuring his or her physiological response while performing a specific series of a few multiple-choice questions.
<em>The given statement in the question signifies that the investigators were using the guilty knowledge test.</em>
Explanation:
the spontaneous or unplanned expulsion of a fetus from the womb before it is able to survive independently.
"his wife had a miscarriage"
