The image shows Michelangelo’s David. A statue of a male from the waist up. The figure is not clothed, showing muscular detail.

How is this sculpture an example of humanism in Renaissance art?

It uses proportion, and the subject is two-dimensional.
It uses accurate details and emphasizes the physical form.
It was made during the classical period and uses sfumato.
It was made without color and shows a lack of expression