Which disorder occurs when the lower part of the neural tube fails to close?

A) spina bifida
B) cerebral palsy
C) anencephaly
D) sciatica

Neural Tube

The embryonic precursor to the central nervous system, consisting of a tube that eventually forms the brain and spinal cord.

Spina Bifida

A birth defect where there is incomplete closing of the backbone and membranes around the spinal cord.

Anencephaly

A severe congenital condition characterized by the absence of a major portion of the brain, skull, and scalp.