Question

children learn to express negation in a certain order. list them in the right order.
a. sentences with external negative marker
b. shaking their head while saying a positive statement
c. inserting
o\ within a positive sentence
d. constructions with auxiliaries
c - b - a - d
b - c - d - a
a - b - d - c
b - a - c - d

Explanation:

Children first use non - verbal means like shaking their head while saying a positive statement (b) as a basic form of negation. Then they start inserting "no" within a positive sentence (c). After that, they use sentences with external negative markers (a), and finally, they master constructions with auxiliaries (d) for expressing negation.

Answer:

B. b-c-d-a