which injury would likely cause the body to permanently lose the ability to perform simple reflexes?\n○…

Brief Explanations:

Simple reflexes are involuntary, automatic responses that occur via neural pathways called reflex arcs. The spinal cord is a crucial part of these reflex arcs. Damage to nerve cells in the spinal cord can disrupt the normal flow of nerve - impulses in the reflex arc, leading to permanent loss of simple reflexes. A muscle tear in the leg affects muscle function but not the neural pathway of reflexes directly. The death of a single neuron usually does not have a major impact on reflexes as the nervous system has some redundancy. Harm to a nerve in the skin may affect sensation or a local nerve - muscle connection but not all simple reflexes permanently.

Answer:

damage to the nerve cells in the spinal cord