POE on this one...we can eliminate purely on one word ..."should". The use of the indicative 'should' is totally nonsensical in many of the choices. That is, no scientist have calculated that someone SHOULD be struck every nine years.
Canadian scientists have calculated that one human being should be struck every nine years by a meteorite, while each year sixteen buildings can be expected to sustain damage from such objects.
(A) one human being
should be struck every nine years by a meteorite X
(B) a human being
should be struck by a meteorite once in every nine years X
(C) a meteorite will strike one human being once in every nine years X
-Here we don't have that 'should' issue, but the sentence is nonsensical in another way: it suggests that scientists calculate that A METEORITE ...awkward
(D) every nine years a human being will be struck by a meteorite
CORRECT(E) every nine years a human being
should be struck by a meteorite X
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"Do not pray for an easy life, pray for the strength to endure a difficult one." - Bruce Lee