Joint involved in movement of head from left to right.: (A) Atlanto axial, (B) Atlanto occipital, (C) C2- C3 Joint, (D) C3- C4 Joint
Answer is A. Answer A. Atlanto axialAtlanto-occipital (between skull and C1) joint permit nodding of head ( as when indicating approval or YES) and Atlanto-axial joint permits the head to be turned from side to side (as indicating disapproval or NO).