Please i need a well explainable answers not copy and paste please

Question 1 a) Prototypes are useful tools for designers to discuss their ideas with stakeholders. It becomes a communication medium between the systems developers and is very suitable and effective to be used by developers as a test platform for their ideas. For example, if the designer is trying to identify methods in which the users would implement a set of tasks, and to determine if the tools developed would be able to support these tasks, the prototype development should be paper based. Explain with at least one example, the three (3) main importance of prototype development. Major Topic 10 AP 7 - Prototype Development b) The main goal of the Human-Computer Interaction is to produce a system that is easy and safe to use, apart from being able to function well. This computer system should not just be easily usable, but also easily assembled, studied and maintained. Discuss stating at least, one example of the usability goals. Major Topic 1 AN 7 - Introduction To Human Computer Interaction c) Discuss the two types of mental models that users employ when interacting with devices Major Topic 3 6 EV on