Answer
Options b, c and e.
Work Step by Step
Real time processing is required by the processes which includes a continual input, constant processing, and steady output of data. Some of the process which includes real time processing are video conferencing, voice over Internet Protocol, online gaming, community storage applications and many more.
Explanations for options:
1) Clearly option a. Printing mailing labels and option and d. Executing a program that predicts the state of next year’s economy does not require any real time processing as they does not include any constant processing or continual input and they are not bound to any strict time constraints.
2) On the other hand option b. Playing a computer game, c. Displaying numbers on a smartphone screen as they are dialed, e. Playing an MP3 recording requires real time processing as any delay in them can lead to inconsistency of the whole process.
