The correct answer is: A. 1 December
World AIDS Day is observed on 1 December each year. It is an international day dedicated to raising awareness of the AIDS pandemic and to mourning those who have died from the disease. The first World AIDS Day was observed in 1988, and it has been observed every year since then.
The date of 1 December was chosen because it is the anniversary of the World Health Organization’s (WHO) first report on the AIDS pandemic. The report, which was released on 5 December 1987, described a new and deadly disease that was spreading rapidly through the gay community in the United States.
World AIDS Day is a time to remember those who have died from AIDS, to support those who are living with the disease, and to raise awareness of the importance of HIV prevention and treatment.
The other options are incorrect because they are not the dates of World AIDS Day.