sentence2_structure: A complex machine<>is described<>by: it is made of more than one simple machine$$$it<>is made<>of more than one simple machine
sentence1: Lastly, I decided to create more complex behaviors and created a simple Marble Machine which comes alive by clicking on one of the two marbles.
sentence2: A complex machine is described by: it is made of more than one simple machine.
question: Which of the following statements best describes a complex machine?