In a speech about a group of children who suffer from a rare congenital heart defect, which if the following presentational aids would be the most effective?

In a speech about a group of children who suffer from a rare congenital heart defect, which if the following presentational aids would be the most effective? 




A. Photograph
B. An actual object
C. A model
D. A diagram
E. A simple drawing





Answer: A


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