Question

which of the following operating systems would allow a user to add functionality and sell or give away their versions? a. linux b. macos c. windows d. unix

Explanation:

Linux is an open - source operating system. Open - source allows users to modify, add functionality, and distribute (sell or give away) their versions. macOS, Windows, and most commercial versions of UNIX are proprietary and do not allow such freedoms.

Answer:

A. Linux