Refer to the figure showing a phylogenetic tree of immunodeficiency viruses. 
Based on the figure, what is the likely number of independent origins of HIV in humans? Explain, pointing out the human virus's origins.
Definitions:
Helper
A person or thing that provides assistance or support.
Audience Inhibition
The phenomenon where people are inhibited from expressing their thoughts or feelings in front of others due to fear of disapproval or embarrassment.
Offering Help
The act of providing assistance or support to someone in need voluntarily.
Interpreting an Event
The process of understanding or assigning meaning to an occurrence or situation based on one's own perspective and context.
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