a chart showing how commonly used chemicals negatively affect farmers' health
The multimedia presentation is about the harmfulness of standard farming methods, as compared to organic farming techniques. This chart shows how standard farming techniques can be harmful, so it is the best choice. The quote from a farmer about the difficult process of applying chemicals is not an effective visual aid. A map showing the number and locations of organic farms only shows the prevalence of these farms, not how they are less harmful than standard farming techniques. A photo of people enjoying fruits and vegetables also does not aid the audience in a better understanding of the presentation's topic.