Computer Science Homework Help

I’m working on a computer science question and need an explanation and answer to help me learn.

Suggest the most appropriate generic software process model that might be used as a basis for managing the development of one of the following systems. Explain your answer according to the type of system being developed: 

A system to control antilock braking in a car 

A virtual reality system to support software maintenance

A university accounting system that replaces an existing system

An interactive travel planning system that helps users plan journeys with the lowest environmental impact