Mr. Pappadopolis has a neurocognitive disorder that has caused an interesting symptom: He no longer acknowledges the left side of his body. For example, he does not shave the left side of his face or button his left shirt cuff.
This is a sign that he:

a) has Parkinson's disease.
b) suffered a stroke.
c) is recovering from a traumatic brain injury.
d) has aphasia and agnosia.

They suffered a stroke. (Ans. B)

Explanation:

Stroke is known as the medical situation that damages the brain from the termination of its blood supply. Stroke symptoms involve trouble in speaking, paralysis of the face, leg, and arm, muscle weakness, sudden vision loss, etc.

Initial treatment given to the patient with medication like clot-buster, it helps to minimize brain damage. Other medications help to prevent complications and avoiding extra strokes. If Mr. Pappadopolis does not shave the left side of his face or button his left shirt cuff than he is surfing from paralysis stroke of the left side of the body.

the missing space is phylum

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.