The correct option is (d) A-(ii), B-(iii), C-(iv) D-(i).
Explanation:
Amoebiasis is caused by Entamoeba histolytica. Prevention of infection is entirely a matter of hygiene, both personal as well as municipal. Their prevention include use of properly cooked food and sterilized water.
Diphtheria is caused by Corynebacterium diphtheriae. The symptoms are fever, sore throat, severe damage to heart, nerve cell and adrenal glands. The vaccine DPT is used for diphtheria, pertussis and tetanus.
Cholera is caused by Vibrio cholerae, a Gram negative bacterium. it spreads by faecal contamination. The dehydration and loss of mineral salts can cause death. It is treated by use of oral rehydration therapy.
Syphilis is caused by Treponema pdlidum, a spirochaete and spread by sexual contact and is STD.