the answer is C. thinking about a problem constantly
Answer:
Requirement for vitamin C was 10 mg.
Explanation:
Vitamin C is the water soluble vitamins present in the human beings. Vitamin C is important for the gums and this enzyme can acts as cofactor for metabolic reactions.
Deficiency of vitamin C causes scurvy. The scurvy can be treated by inclusing the vitamin C in the diet. The intake of 10 mg vitamin C per day, Kayla feels better. Hence, doctors can conclude that she requires atleast 10mg of vitamin C per day to treat her scurvy.
Thus, the correct answer is option (B).
Avoiding secondhand smoke can help prevent lung cancer.