The reflex shown here is:​: (A) Tendon reflex​, (B) Abdominal reflex​, (C) Landau reflex​, (D) Asymmetrical tonic neck reflex (ATNR)
Answer is C. Its a normal reflex observed in children between the age of 3 and 12 months: When the child is supported horizontally in the prone position, the head rises and the back arches. Absence of the reflex is a sign of a neurological disorder, such as cerebral palsy or motor neuron disease.​