Upward and downward distortions occur almost automatically in

A good introduction does which of the following?

a. Captures the audience's attention and motivates them to listen b. Presents a clear thesis statement c. Enhances the speaker's credibility and provides a clear preview of points d. All of these

The food we eat often directly impacts the way we smell, which can make it easy to identify our cultural background to other people

Indicate whether this statement is true or false.