Which of the following is a severe,incurable,infectious,and fatal disease?

The World Health Organization has started a number of programmes to prevent the spreading of $HIV$ infection.
Few such steps include:
$I.$ Ensuring the use of disposable needles and syringes.
$II.$ Free distribution of condoms.
$III.$ Advocating safe sex.
$IV.$ Controlling drug abuse.
Which of the steps given above are correct?

$AIDS$ is caused by the reduction of:

Human immunodeficiency virus $(HIV)$ has a protein coat and a genetic material which is:

What is the full form of $HIV$?

Arrange the following statements regarding $AIDS$ in the correct chronological order of the infection process:
$(1)$ After entering the individual's body,the $HIV$ virus enters macrophages,where the viral $RNA$ genome replicates into viral $DNA$ with the help of the reverse transcriptase enzyme.
$(2)$ $HIV$ enters helper $T$-lymphocytes.
$(3)$ $HIV$ has an $RNA$ molecule as its genetic material.
$(4)$ Newly formed viruses are released into the blood and attack other helper $T$-lymphocytes.
$(5)$ Viral $DNA$ is incorporated into the host cell's $DNA$.