Assume a machine learning $($ML$)$ tool for virus detection. If the tool creates an ML model using data instances labeled either virus or benign $($non$-$virus$),$ which of the following ML approaches is being used for this tool?

Question $19$ options:

$1)$

supervised learning

$2)$

semi$-$supervised learning

$3)$

self$-$supervised learning

$4)$

unsupervised learning