Sentence Correction

Researchers discovered that the failure of legislation passed in 1936 in France to improve the working conditions of bakers was due more to the fear that large conglomerates would gain footholds in small communities than to any inherent problem in the legislation.

A. more to the fear that large conglomerates would gain footholds in small communities than to any

B. to the fear that large conglomerates could gain footholds in small communities than to any

C. because of the fear that large conglomerates could gain footholds in small communities and also because there were

D. more to fearing that large conglomerates could gain footholds in small communities than any

E. because there was more of a fear that large conglomerates could gain footholds in small communities than to any

[spoiler]Source: Princeton Review[/spoiler]

IMO b here. A breaks the ||ism

Edited - However, A is OA. Check this.

https://www.beatthegmat.com/princeton-sc-t8076.html

Is it B ?

A, uses the correct idiom
More to x than to y

IMO A.

due more to X than to Y construction is possible.

I did not know about this construction.
due more to X than to Y

Thanks Everyone for your inputs.

A is good