How can visual aids be incorporated into an impromptu speech?

Incorporating visual aids into an impromptu speech can significantly enhance the audience's understanding and retention of the information being presented. The correct answer highlights that visual aids can be effective in illustrating points when they are prepared in advance. This means that the speaker can leverage visual elements to clarify complex ideas, emphasize important data, or provide visual examples that support the spoken content. When these aids are utilized thoughtfully and align with the speech's main themes, they can make the message more engaging and memorable for the audience.

On the other hand, while visual aids can simplify a speech, it's not always a requirement, especially in an impromptu scenario where preparation time may be limited. Asserting that visual aids should always be used overlooks the context and the spontaneity that comes with impromptu speaking. The statement that they are unnecessary does not acknowledge their potential benefits, while insisting that they must always be used could impose an unrealistic constraint on the speaker, especially in situations where they are not feasible. Hence, the most effective way to use visual aids is to prepare them in advance to complement the speech when the opportunity arises.