It is possible that, like the Volkswagen, whose unchanging

[aspirant2011]

It is possible that, like the Volkswagen, whose unchanging exterior over decades concealed many changes in its internal machinery, the evolution of many prehistoric microbes occurred with no significant modification to their sheaths.

(A) the evolution of many prehistoric microbes occurred with no significant modification to their sheaths

(B) the evolution of many prehistoric microbes was occurring without significant modification of their sheaths

(C) no significant modification was made to the sheaths of many prehistoric microbes as they were evolving

(D) the sheaths of many prehistoric microbes went without significant modification during their evolution

(E) many prehistoric microbes evolved without significant modification of their sheaths

[spoiler]OA: Why is D wrong????[/spoiler]

[Frankenstein]

Hi,
I think in D, 'their' can refer to sheaths or microbes. if it refers to sheaths, it could mean only about the evolution of sheaths and not the microbes as a whole. Moreover the comparison is with Volkswagen and its description is about its interiors(i.e its parts). So, the comparison would be apt if it is compared to microbes as a whole and its description about its parts(sheaths).
Hence, E is better.

[aspirant2011]

Hi,
I think in D, 'their' can refer to sheaths or microbes. if it refers to sheaths, it could mean only about the evolution of sheaths and not the microbes as a whole. Moreover the comparison is with Volkswagen and its description is about its interiors(i.e its parts). So, the comparison would be apt if it is compared to microbes as a whole and its description about its parts(sheaths).
Hence, E is better.

Thanks a lot, I got it

[mirantdon]

Straightforward comparisions : apples to apples .
+1 for E