Which of the development process models would you follow for the following projects? Give justifications.

(a) A data entry system for office staff that have never used computer before. The user interface and user-friendliness are extremely important.

(b) A new system for comparing fingerprints. It is not clear if the current algorithm can compare fingerprints in the given response time constraints.

(c) A new missile tracking system. It is not known if the current hardware/software technology is mature enough to achieve the goals.

(d) A flight control system with extremely high reliability. There are many potential hazards with such a system.

(e) A website for an online store which always has a list of desired features it wants to add and add them quickly.