In order to determine whether or not white cabbage butterflies discriminate among flowers that contain nectar and those that do not, entomologists have designed experiment that they hope will reveal the flower - visiting pattern of these butterflies.
A.In order to determine whether or not white cabbage butterflies discriminate among - Among is used for more than 2 items , also whether or not is redundant
B.To determine whether white cabbage butterflies discriminate between - Correct
C.For determining if white cabbage butterflies discriminate or not between - For determining is awkard , discriminate or not is redundant
D.Because of wanting to determine whether white cabbage butterflies discriminate between - Because of wanting is redundant
E.Since they wanted to determine if white cabbage butterflies discriminate among - Among is used for more than 2 items . Since we have 2 items here , we need to use between
Answer B