A JavaFX Button’s event handler receives a(n) ________, which indicates that the Button was clicked.

Computer systems that fall into the __________ category have a sequence of data that is transmitted to a set of processors, each of which executes a different instruction sequence.

Fill in the blank(s) with the appropriate word(s).

How many natural clusters do you observe from the graph? Assign a label (C1, C2, etc.) to each cluster in the graph.