The manager of a local appliance store wants to conduct a customer satisfaction survey. Which population should the manager survey?

A. Sales people in the store.
B. People in charge of repairs at the store.
C. People who bought a major appliance from the store.
D. Prospective buyers who visit the store.

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.