There may be more than a dozen boat parties in the Grand Canyon on a given day between May and October, each party positioned such that one seldom encounters the other.
A such that one seldom encounters the other
B such that there are few encounters one with another
C in such ways as not to encounter others
D so as not to encounter the other
E so that one seldom encounters another
please answer with explanation
Buddies, the problem is of Subject - verb agreement, "Each Party" - subject of the clause must go with "encounters" and not "encounter", so C and D out.
B is Awkward
Between, A and E - It should be "A", which says "Each party positioned such that one seldom ...", "so that" of E can not replace "such that" of A bcoz "such that" describes the way party has been positioned.
Answer should be "A".