两道语法题

1, Affording strategic proximity to the Strait of Glbraltar, Morocco was also of interest to the French throughout the first half of the twentieth century because they assumed that (if they did not hold it,their grip on Algeria was always insecure)

a) ...
b) without it their grip on Algeria would never be secure
c) their grip on Algeria was not ever secure if they did not hold it
d) without that, they could never be secure about their grip on Algeria
e) never would their grip on Algeria be secure if they did not hold it

Answer: B What is the problem with E?

2) (Beatix Potter, in her book illustrations, carefully coordiating them with her narratives,) capitalized on her keen observation and love of the natural world

a) ...
b) In her book illustrations, carefully coordinating them with her narratives, Beatrix Potter
c) In her book illustrations, which she carefully coordinated with her narratives, Beatrix Potter
d) Carefully coordinated with her narratives, Beatrix Potter, in her book illustrations
e) Beatrix Potter, in her book illustrations, carefully coordinated them with her narratives and

Answer : C In which way is C better than B?

Thanks for your help~
[em04]