Reveal part of the backstory that occurs during the flashback.
The middleground is the space within a composition between the foreground and the background. In the shot composition above, it is the yellow-outlined space, which you can see juxtaposed against the red foreground (the obstructive bars) and the out-of-focus background.
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A synthesis differs from a conclusion in that
<span> b. A synthesis explains connections between ideas.</span></span>
<span>B. Flash mobs seem both interesting and safe, but participants are irresponsible.
this would be the answer.</span>
I believe "think he had seen a ghost" is the best answer.