Keith is a beginner in programming and wants to develop an application that will be useful for home security. He finds a list of software readily available in the market and wishes to code an advanced program. He searches online for relevant programs that can be modified and shared with others legally and free of cost. Which of the following types of software should Keith look for on the Web?

A. ?Commercial software
B. ?Proprietary software
C. ?Cloud based software
D. ?Public domain software


Answer: D

Computer Science & Information Technology

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