The development of the spinal cord before arms during prenatal is an example of?

Cephalocaudal development

Explanation: Cephalocaudal development is the sequence of growth and development that proceeds from the head (cephalic) to the tail (caudal). Spinal cord development begins in the cervical (neck) region and progresses toward the lower (caudal) regions, which is why the spinal cord can develop before the arms prenatally.