(a) Iodine

(b) Calcium

(c) Phosphorous

(d) All of the above

(a) vitamin A

(b) vitamin K

(c) vitamin C

(d) All of the above

(a) 12

(b) 13

(c) 15

(d) 22

(a) Vaccination

(b) Balanced diet

(c) Personal hygiene

(d) All of the above

(a) Contaminated Air

(b) Contaminated Food

(c) Poor hygienic conditions

(d) All of the above

(a) Typhoid

(b) Poliomyelitis

(c) Tuberculosis

(d) All of the above.

(a) Contamination is caused by the entry of germs by an insect bite

(b) Contamination is caused by the entry of germs by an animal bite

(c) Contamination is caused by the entry of germs into drinking water or edible foods.

(d) None of the above

(a) The bite of a mosquito

(b) Sharing drug needles

(c) Drinking contaminated water

(d) All of the above

(a) Typhoid

(b) Malaria

(c) Diarrhea

(d) Yellow fever

(a) AIDS

(b) Dengue

(c) Measles

(d) All of the above