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: Machine Vision The machine vision module aims to teach sufficient theory and practical information to enable students to understand, design and implement simple, practical vision systems, and to understand more complex ones.
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?