Arrange the lower order level of intelligence to higher order level of intelligence as per heirarchical step model of learning by Gagne:
(i) Problem solving
(ii) Concept learning
(iii) Multiple discrimination learning
(iv) Signal learning
1
(iv) < (iii) < (i) < (ii)
2
(iv) < (iii) < (ii) < (i)
3
(i) > (ii) > (iii) > (iv)
4
(iii) < (iv) < (ii) < (i)