[email protected] wrote: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

of passing

[C] between its passes

[D] of its passes

[E] as it passes


The given OA is C.

Could any one help me in understanding this question. I am finding a lot difficult to understand this question.

[email protected] wrote:One signal or idea to get this question can be this:

The word 'Interval' itself means 'between two things'. Its an implied thing so you dont need 2 specific things as in other idiom cases. So that brings us down to the options A and C.

Between A and C, between passing does not mean anything or is wordy and not concise.

where in C clearly states that the interval between its passes, so the noun is passes.

And brings us down to the answer C.

Could any of the experts please advise as to the above is correct or incorrect.

Thanks...