How does president johnson define the problem in his speech

What is most likely nelson mandela's purpose of using third person point of view after introducing himself in his introductory paragraphs

Which best compares the authors’ purposes in silent spring and “save the redwoods”? both authors want readers to protect human rights. both authors want readers to focus on saving trees. both authors intend to entertain readers with their essays. both authors intend to convince readers of their viewpoint.

Read this passage from "the pedestrian" by ray bradbury: which sentence best describes the overall impact of the setting?