Answer to Question 1
D
Excessive doses of vitamin C can cause gastrointestinal disturbances, such as nausea, abdominal cramps, and diarrhea.
Constipation is not a symptom of vitamin C excess or any other vitamin excess.
Seizure activity is not a symptom of vitamin C excess or any other vitamin excess.
Excessive bleeding is not associated with vitamin C excess but is related to vitamin K deficiency.
Answer to Question 2
D
The behavior that increases the risk of acquiring hookworms is going barefoot.
Eating partially cook pork products is associated with trichinosis (roundworm infestation).
Allowing a dog to lick the face and ingesting undercooked fish are not associated with hook-worm infestation.