Answer:
D.
Explanation:
"However, a biopsychosocial approach to treatment is required to address all symptoms, particularly as organic disorders often have affective and relational consequences as well. Psychotherapy and cognitive rehabilitation strategies have been shown to be effective with a variety of acute and chronic organic disorders. Although therapeutic interventions with chronic degenerative conditions, such as Alzheimer’s dementia, cannot produce permanent change, they can optimize the person’s functioning and increase quality of life."-https://link.springer.com/referenceworkentry/10.1007%2F978-0-387-09757-2_36
I hope this helps.
The central nervous system of the frog is different from that of humans; if the optic nerve of a frog is cut, the animal will be able to see again within weeks but the same damage in humans would cause permanent blindness :).
Fungi should be the answer.