modifiers: experts plz help

GMAC often refers " which" as restrictive clause. Can someone explain me what is restrictive clause

Based on accounts of various ancient writers, scholars have painted a sketchy picture of the activities of an all-female cult that, perhaps as early as the sixth century B.C., worshipped a goddess known in Latin as Bona Dea, “the good goddess.”
(A) Based on accounts of various ancient writers,
(B) Basing it on various ancient writers’ accounts,
(C) With accounts of various ancient writers used for a basis,
(D) By the accounts of various ancient writers they used,
(E) Using accounts of various ancient writers,

OA E

nikhilgupta wrote:Based on accounts of various ancient writers, scholars have painted a sketchy picture of the activities of an all-female cult that, perhaps as early as the sixth century B.C., worshipped a goddess known in Latin as Bona Dea, “the good goddess.”
(A) Based on accounts of various ancient writers,
(B) Basing it on various ancient writers’ accounts,
(C) With accounts of various ancient writers used for a basis,
(D) By the accounts of various ancient writers they used,
(E) Using accounts of various ancient writers,

OA E

IMO E

A. Based on........, scholars--------------it seems that scholars are based on something
B. It has no antecedent.
C. Unclear meaning and ambiguous construction.
D. They wrongly refers to ancient writers.

nikhilgupta wrote:Based on accounts of various ancient writers, scholars have painted a sketchy picture of the activities of an all-female cult that, perhaps as early as the sixth century B.C., worshipped a goddess known in Latin as Bona Dea, “the good goddess.”
(A) Based on accounts of various ancient writers,
(B) Basing it on various ancient writers’ accounts,
(C) With accounts of various ancient writers used for a basis,
(D) By the accounts of various ancient writers they used,
(E) Using accounts of various ancient writers,

OA E

IMO E;

Use this to understand better:
https://sas.elluminate.com/site/externa ... cr&sid=329

nikhilgupta wrote:Please explain me the usage of following modifiers

1. Based on
2. Because of
3. Due to

I often get confused about using the correct modifier out of these three. Also, plz mention any other similar modifiers that has similar meanings.

Please refer Ron's video on this. There is a single recording based on this topic.