The correct option is A AIDS
AIDS is caused by the human immunodeficiency virus (HIV). When a person is infected with HIV, the virus assaults the immune system and weakens it. As the immune system deteriorates, the individual becomes more vulnerable to life-threatening infections and malignancies. When this happens, the disease is known as AIDS.
During pregnancy, labour and delivery, or nursing, HIV can be passed to the foetus or newborn. The virus infects the majority of HIV-positive children when it is passed down from an HIV-positive mother to the child. This can happen at any time throughout pregnancy, childbirth, or breastfeeding.
Only blood, sperm, vaginal fluids, and breast milk have been proven to spread illness.
Down's syndrome is a genetic disorder caused when abnormal cell division results in trisomy of 21st chromosome.
Haemophilia is a disorder that affects the blood's ability to clot. It's usually inherited.