Final answer:
Bell's palsy is the condition caused by inflammation of Cranial Nerve VII (facial nerve), leading to facial paralysis or weakness. It is distinct from conditions like strokes, Cushing's disease, and demyelinating diseases such as Guillain-Barré syndrome. The correct option is c.
Step-by-step explanation:
Bell's palsy is a condition resulting from an inflammation of the facial nerve, known as Cranial Nerve VII (CN VII). This condition causes paralysis or weakness on one side of the face, affecting the facial expressions and can also impact the sense of taste and the production of tears and saliva.
Comparatively, a stroke is caused by the disruption of blood to the brain. Cushing's disease is a disorder caused by the overproduction of cortisol by the adrenal glands.
The cranial nerve that contains preganglionic parasympathetic fibers is the facial nerve, CN VII. Diseases like Guillain-Barré syndrome represent demyelinating diseases of the peripheral nervous system, which also result from autoimmune reactions leading to inflammation in peripheral nerves. Option c. is the correct one.