Depending on the type, stage, and purpose of your prototypes, you may choose different formats to present them to your senior management and clients. You may use physical or digital models, sketches, wireframes, mockups, videos, animations, or interactive demos to showcase your prototypes. You should choose the format that best suits the level of fidelity, functionality, and feedback that you want to achieve with your prototypes. You should also consider the context, setting, and time constraints of your presentation, and choose the format that is most appropriate and feasible for them.