GPREP

[aj5105]

The Kwakiutl recognised one social unit larger than the tribe-the confederacy,which wasa cluster of loosely knit,informally related neighbouring tribes who interacted with themselves more often than between other tribes.

a)tribe 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

[stop@800]

I will go with C

whats the oA?

[aj5105]

OA - C

I understood the need of 'with'.
Could you please explain more why 'who' is required?

[stop@800]

to refer back to tribe.
"related neighbouring tribes who interacted with ..."
and without who
"related neighbouring tribes interacted with ..." is not at all logical


remember that "wings, wings so smooth" example....


PS:
One observation
Your question has "tribes" in underlined part and option A has "tribe".

[aj5105]

oops,typoz brother.