I search for this question and I found couple of threads where this problem has already been discussed. As per one of the threads, the source is Kaplan 800.
https://www.beatthegmat.com/doubt-about- ... t1018.html
https://www.beatthegmat.com/visited-the- ... 57626.html
There is a typo in option B here. Actually option B is
(B) see layers of sediment in the gaping canyon, whose different colors mark
If option B is using 'see' instead of 'seen', then most certainly it is wrong.
option C, D and E are ruled out because of incorrect usages as mentioned above.
That leaves us with option A.
https://www.beatthegmat.com/doubt-about- ... t1018.html
https://www.beatthegmat.com/visited-the- ... 57626.html
There is a typo in option B here. Actually option B is
(B) see layers of sediment in the gaping canyon, whose different colors mark
If option B is using 'see' instead of 'seen', then most certainly it is wrong.
option C, D and E are ruled out because of incorrect usages as mentioned above.
That leaves us with option A.












