Clear3. Dear mice normally do not travel far from their nests, and dear mice that are moved more than half a kilometer from their nests generally never find their way back. Yet in one case, when researchers camped near a dear mouse nest and observed a young dear mouse for several weeks before moving it to an area over two kilometers away, the dear mouse found its way back to its nest near their camp in less than two days.
Which one of the followings, if true, most help to explain how the dear mouse might have found its way back to its nest?
(A) The area to which the dear mouse was moved was dryer and more rocky than the area in which its nest was located.
(B) The researchers released the dear mouse in a flat area across which their campfire smoke drifted.
(C) There were very few dear mice in the area to which the dear mouse was moved.
(D) The researchers had moved the dear muse in a small dark box, keeping the mouse calm before it was released.
(E) Animals that prey on dear mice were common in the area to which the dear mouse was moved.
答案：B
实在不知道答案B是怎么得出来了？？？这种题如何做？
concerning explanation question, you have to find one choice which can reasonably explain the phenomenon mentioned in the stimulus.
the drifted smoke along the flat area directed the dear mouse to return their nests from 2 kilometers away
Thanks for you two above Clear
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