Karen Is Studying About Microcontrollers in Her Engineering Class, and Wants

Multiple Choice

Karen is studying about microcontrollers in her engineering class, and wants to learn more about how they are used.
-Which of the following is NOT a true statement that Karen learns about microcontrollers?

A) They are an almost invisible technology.
B) They tend to be environmentally unfriendly.
C) They are a technology that requires little adaptation.
D) They are a technology that doesn't require much learning on the part of the people who interact with their devices.