The answer is going to be the letter B. 794
Explanation:
<em>hope</em><em> </em><em>this</em><em> </em><em>helps</em><em> </em>
<em>Please</em><em> </em><em>reply</em><em> </em><em> </em>
In reverse engineering, the scientist get the result first, then they examine that result to find out what caused the result.
From the options , the one that filled this criteria of reverse engineering would be : A intelligence testing, which gathers data based on research subjects' test scores
hope this helps
i would say the anwser is most definetly C