Question from the Deep learning - Fundamentals test

...the machine trains the model using an unlabeled training data set: input data isn’t related to any output data.

...training data set can either be labeled or not: “supervised” simply means that the developer can modify by hand the model generated by the neural network (he supervises the model)

...the machine trains the model using a labeled training data set (for each of this set’s input data there is a corresponding output data).