In the demonstration of a new product to a group of potential users, which of the following is the MOST effective way to hold the audience’s attention?

In the demonstration of a new product to a group of potential users, which of the following is the MOST effective way to hold the audience’s attention?

A.
Give away prizes to those who stay for the demonstration.

B.
Make sure that the demonstration shows how the product would be of use to the audience.

C.
Make sure that the demonstration includes a lot of boldly colored graphics.

D.
Ask the audience a number of questions to encourage their participation in the demonstration.