Some scholars assert that the foundation of Slavonic literat

[gmatdriller]

Some scholars assert that the foundation of Slavonic literature was as a result of the linguistic contributions by two brothers in ninth-century Great Moravia, Cyril and Methodius, who are credited with inventing the Glagolitic alphabet.

A. the foundation of Slavonic literature was as a result of the linguistic contributions by
B. Slavonic literature's founding was mainly contributed by the linguistic influence of
C. Slavonic literature was founded as a result of the linguistic contributions of
D. the foundation of Slavonic literature stems from linguistic contributions made by
E. the founding of Slavonic literature is derived from linguistic contributions by

[gmatwar13]

I would go with C...

[mvaditya]

I too will go with "C".

[amit.saxena]

My Guess 'D'.

This sounds good both Logically and Grammatically.

[pritish2301]

"Contributions made by" seems to be a correct usage here. Hence I would go with 'D'.
What is the OA?

[gmatdriller]

OA is C
The original sentence says the foundation occurred in the past; also, to use "stems"
for present perfect implies that the "foundation" is usually feature of the contributions
by the 2 brothers.