C. nose .......................................
Turn of the light or drink some milk like 2% milk 1% milk, or low fat milk. any type of milk you have!
Dehydration causes the brain to shrinks and require more work to complete the task when comparing with hydrated brain the do same work. Unlike the condition called hyponatremia or what we called as over hydration that dilute the Sodium ion ( Na+) Dehydration will make your blood more concentrated with Sodium +.This will cause the urine to appear darker. Dehydration will cause moody mood,dry mouth,dark urine and etc. Over hydration will cause nausea,vommitting,muscle spasms,or rare cases,death by damaged brain cell because the brain is inside the skull. Since the skull is solid bone,once the brain swell it take up spaces then having pressure between the swelled brain and the skull. That causes brain damage or brain death.
Answer:
Retrograde amnesia.
Explanation:
Retrograde amnesia may be defined as the medical condition in which the individual has memory loss before the onset of disease or injury. This affects the individual negatively affected by episodes.
Ryan after his head injury lost all the memory that has occurred before the accident. The Ryan is suffering from the retrograde amnesia as he has lost only the part of memory before the accident. The individual is able to form new social relationship.
Thus, the answer is retrograde amnesia.