Human be haviour is mostly a product of learning, ____ the behavior of animals depends mainly on instinct.

1. A.
   whereas
2. B.
   so
3. C.
   unless
4. D.
   that

 75.Human be haviour is mostly a product of learning, ____ the behavior of animals depends mainly on instinct.

A. whereas                B. so                            C. unless                    D. that