Final answer:
The waterfall model is a sequential approach suitable for well-defined software projects. Incremental and spiral design processes are iterative, allowing for ongoing evaluation and improvement.
A structured design process ensures a methodical approach in decision making, critical for the success of complex designs.
Therefore, the correct answer is: option e) A reasonable approach when requirements are well defined.
Step-by-step explanation:
The waterfall model of software development is a sequential design process traditionally used in software engineering. It is best suited when requirements are well-defined and not expected to change significantly during the development cycle.
The model itself is structured and linear, progressing through stages such as conception, initiation, analysis, design, construction, testing, deployment, and maintenance.
Incremental design, contrastingly, involves developing a system through repeated cycles (increments) and in smaller portions at a time.
This allows for partial implementation of the product, which can then be evaluated and improved upon with each successive iteration. One advantage of this approach is the flexibility to adapt and refine the product progressively.
Using a structured design process is critical, especially for complex projects. It assists in organizing the decision-making process, ensuring that all important issues are addressed and reducing the likelihood of overlooking critical aspects of the product's design.