AIDS is caused by Human Immunodeficiency Virus (HIV) which is

Acquired Immuno Deficiency Syndrome (AIDS) is caused by the Human Immunodeficiency Virus (HIV), which is primarily classified as a retrovirus [3]. Specifically, HIV belongs to the family Retroviridae and the genus Lentivirus [1]. Retroviruses are characterized by their ability to use reverse transcription to integrate their genetic material into the host cell's DNA. While HIV is a lentivirus (a genus within the retrovirus family), the term "Lente virus" in option 2 is a misspelling of the genus name, and "Retrovirus" is the standard broader classification used in medical and biological contexts [3]. Arboviruses are viruses transmitted by arthropod vectors like midges or mosquitoes, which does not apply to HIV. Therefore, HIV is most accurately identified as a retrovirus that targets helper T cells of the immune system [3].

Sources

1. [1] https://pmc.ncbi.nlm.nih.gov/articles/PMC4924471/
2. [3] https://www.sciencedirect.com/topics/physics-and-astronomy/human-immunodeficiency-virus