Which software development model is actually a meta-model that incorporates a number of the software development models?

Which software development model is actually a meta-model that incorporates a number of the software development models?
A .  The Waterfall model
B .  The modified Waterfall model
C .  The Spiral model
D .  The Critical Path Model (CPM)

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Answer: C

Explanation: The spiral model is actually a meta-model that incorporates a number of the software development models. This model depicts a spiral that incorporates the various phases of software development. The model states that each cycle of the spiral involves the same series of steps for each part of the project. CPM refers to the Critical Path Methodology. Source: KRUTZ, Ronald L. & VINES, Russel D., The CISSP Prep Guide: Mastering the Ten Domains of Computer Security, John Wiley & Sons, 2001, Chapter 7: Applications and Systems Development (page 246).