Question

which option is designed by software engineers?
a. operating systems that run computers
b. programming languages that help computers operate
c. networks that connect computers
d. computer components such as monitors and mice

Explanation:

Software engineers design operating systems. Operating systems are a key software component that manages computer hardware and software resources. Programming languages are tools used by software engineers but are not the end - product designed by them in the context of this question. Networks and computer components like monitors and mice are more related to hardware or networking aspects rather than the main design focus of software engineers.

Answer:

A. Operating systems that run computers