What does it mean for a data science algorithm to be "human$-$in$-$the$-$loop"?

Select an answer:

It means that the algorithm includes humans in the decision$-$making and implementation such that humans can take over the actions.

It means that the humans can be held legally liable for the results of the algorithm.

It means that humans are directly affected by the algorithm.

It means that the data for the algorithm was generated by humans.