The correct option is B Transfusion of infected blood
AIDS is caused by HIV virus. It can spread through various means like:
i. Sexual contact with an infected person.
ii. Transfusion of contaminated blood.
iii. From a pregnant mother to her child during birth or breastfeeding.
It does not spread by:
i. Touching, kissing and socialising with the infected person.
ii. Eating meals with an infected person.
iii. Mosquito bites.