Robert Gagne's hierarchy of learning consists of:
(i) symbolic learning
(ii) Stimulus-response learning
(iii) Combinatorial learning
(iv) Social Constructivist learning
(v) Verbal association
(vi) Discrimination learning
A(ii), (iii), (iv)
B(i), (iii), (iv)
C(ii), (v), (vi)
D(i), (v), (vi)
