Sentence Correction

The KwakiutI recognized one social unit larger than the tribe-the confederacy, which was a cluster of loosely knit, informally related neighboring tribes who interacted with themselves more often than between other tribes.

A. tribes who interacted with themselves more often than between

B. tribes who interacted among each other more often than among

C. tribes who interacted with one another more often than with

D. tribes, interacting among each other more often than between

E. tribes, interacting among one another more often than with


OA C


Is there no need of comma before who?? as who is modifying tribes.

its a very easy question
the right construction is "interacted with one another than with other tribes"
the use of among and between is wrong
interacted among is wrong
Between is used for two people or two groupes so the use of "between other tribes" is wrong because their could be more than 2 tribes.
what you hae to remember is the right construction
"Interacted with" is the right idiom and for right comparison one should use "with" after "than".