B) a model of the stadion and all its parts that has tiny runners and a crowd
Explanation:
Model is a small scale model of a work or project of architecture, design, engineering, topography, scenography, etc. Can be used as a sketch or piece of study. It can also be used to present or advertise a place. Thus, we can conclude that the visual aid that would help Derek better to show his class a glimpse of the real life of the stadium is through a model.
Past experience because they might have a bad or good relation to that event. For example; if you were involved in many car accidents as a child, getting your drivers license might be terrifying.
