Collection of spinal nerves below the end of the spinal cord: (a) gyrus(b) dendrites(c) cauda equina(d) microglia(e) oligodendroglia

Cauda equina.

Explanation:

Cauda equina is a bundle of spinal nerves found at the end of spinal cord, near the lumbar nerves L1 and L2. It is used to send and receive messages from the brain via the spinal cord, where the nerves attaches, to organs in the lower limbs and pelvis. This allows for sensory impulses carried by the nerves to reach the hip, feet and internal sphincter for proper movement and co-ordination.

Therefore the correct answer is C.

the answer is "a.) well–developed vascular system."

explanation:

nucleus

would be most reasonable answer tbh