Answer:
Step-by-step explanation:
B. graphs
Graphs would be the most effective presentation aid in this case. They can clearly display the rise and fall of the company's stock prices over a certain period of time, making it easy for the board members to understand the trends and patterns. This could include line graphs, bar graphs, or candlestick charts, which are commonly used in finance. The other aids like models, illustrations, or handouts may not offer the same level of clarity and simplicity for this specific type of data.
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