The human immunodeficiency virus (HIV) is a lentivirus (a subgroup of retrovirus) that causes HIV infection and acquired immunodeficiency syndrome (AIDS).AIDS is a condition in humans in which progressive failure of the immune system allows life-threatening opportunistic infections and cancers to thrive.he human immunodeficiency virus (HIV) is a lentivirus (a subgroup of retrovirus) that causes HIV infection and acquired immunodeficiency syndrome (AIDS).
The definition of optimal is the most favorable. An example of optimal used as an adjective is in the phrase optimal score, which means the highest score someone can get on a game. most favorable or desirable; best; optimum. Origin of optimal.
Determining Quantity Supplied Under Regular Market Conditions. The optimal quantity supplied is the quantity that consumers are willing to buy all of the quantity supplied. To determine this quantity, known supply and demand curves are plotted on the same graph. On the supply and demand graphs, quantity is in on the x-axis and demand on the y-axis.