Sentence Correction

Scientists say that each of the photographs taken of the Ares Vallis plain by the Mars Pathfinder indicate the overwhelming extent to flooding on the planet billions of years ago and the degree that rocks were scattered by its force.

(A) indicate the overwhelming extent to flooding on the planet billions of years ago and the degree that
(B) indicate that the extent of the floods on the planet billions of years ago was overwhelming and the degree to which
(C) indicate the overwhelming extent of the floods on the planet billions of years ago and the degree to which
(D) indicates the overwhelming extent of the flooding on the planet billions of years ago and the degree to which
(E) indicates the overwhelming extent to flooding on the planet billions of years ago and the degree that

whats the difference in "extent of' and "extent to"?
plz help.

I choose D.

To me, "Extent of" sounded better than "Extent to" here.

IMO D

each of the photographs.......is singular.......hence ......singular verb reqd.......so A B C out........

now in D and E, I am not very sure about exent of or extent to.....but ya....degree to which rocks were scattered is right const.........

Hence D

ska7945 wrote:Scientists say that each of the photographs taken of the Ares Vallis plain by the Mars Pathfinder indicate the overwhelming extent to flooding on the planet billions of years ago and the degree that rocks were scattered by its force.

(A) indicate the overwhelming extent to flooding on the planet billions of years ago and the degree that
(B) indicate that the extent of the floods on the planet billions of years ago was overwhelming and the degree to which
(C) indicate the overwhelming extent of the floods on the planet billions of years ago and the degree to which
(D) indicates the overwhelming extent of the flooding on the planet billions of years ago and the degree to which
(E) indicates the overwhelming extent to flooding on the planet billions of years ago and the degree that

i pick D too.

IMO D