Which of the Following Best Defines a Robot

Which of the following best defines a robot?

A) It is a broad term that applies to all practical uses of living organisms.
B) It is the ability to build objects one atom or molecule at a time.
C) It is t he use of biological processes, organisms, or systems to manufacture products.
D) It is the process of making a physical object from a three-dimensional digital model.
E) It is a machine that is programmed to perform humanlike functions.