The lack of continuity of the roof of the mouth through the whole or part of its length in the form of fissure extending anteroposteriorly is.. Congenital cleft palate

The lack of continuity of the roof of the mouth through the whole or part of its length in the form of fissure extending anteroposteriorly is?
A. Obturator
B. Splint
C. Stent
D. Congenital cleft palate***