Um, which summary?
If you're talking about this;
Read the summary of the section of "The Beginnings of the Maasai," where the volcanic eruption and its results are described.
As a result of a volcanic eruption, Enkai and the cattle were thrown into the sky. Enkai wanted to save his cattle. He grew a tree that bridged the sky and the earth. The cattle walked down the tree to Neiterkob. Neiterkob and the Maasai tribe took over caring for the cattle.
Why does the summary need to be revised?
Then the answer is:
The summary lacks transitions that connect ideas
Is this a multiple choice question or a written answer?
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.