Because Halley’s comet changes orbit slightly

simplyjat

Because Halley’s comet changes orbit slightly during the seventy-six-year interval between passing close to Earth, it may veer onto a collision course with a planet sometime in the distant future.

(A) between passing
(B) of passing
(C) between its passes
(D) of its passes
(E) as it passes

OA C
What is wrong with E?

zacharyz · Posted: Mon May 05, 2008 6:27 pm Post subject:

The comet's orbit changes when it is AWAY from earth. It passes by earth every seventy-six years.

E) sounds like the comet changes orbit as it passes by the earth. It may also give the impression that the orbit changes as it passes by the earth for seventy-six years.

You need (C) to express the time away from earth