Answer:
The correct answer will be option B.
Step-by-step explanation:
The descending pathway or descending tract is a nervous system which is composed of upper motor neurons which carries the signals from the CNS (brain) to lower neurons.
These upper motor neurons originate in the cerebral cortex of the brain especially "precentral gyrus" or depressions of the cerebrum with their cell bodies in it and axons in the CNS. They pass the impulses via corticospinal tract in which neurons converge and descend through internal capsula.
Thus, option B is the correct answer.