Having trouble on these two questions

Which best describes alexis de tocqueville

The rise of advertising in the 1920s. i am good with seeing how advertisements shape the roaring twenties and how it developed a new way of life through modern days. but i am not sure what the details of advertising in the 1920s were. if possible can you send me links (preferrably credential links) to sources that maybe show like the first company to start advertising through the radio, how advertising benefits (statistics graphs), etc.

Read the excerpt from the monsters are due on maple street.as they suddenly start toward the house. in this brief fraction of a moment they take the first step toward performing a metamorphosis that changes people from a group into a mob. they begin to head purposefully across the street toward the house at the end. steve stands in front of them. for a moment their fear almost turns their walk into a wild stampede but steve's voice, loud, incisive and commanding, makes them stop.stevewait a minute . . wait a minute! let's not be a mob! the people stop as a group, seem to pause for a moment and then much more quietly and slowly start to walk across the street.which sentence from the excerpt is an example of foreshadowing? a) as they suddenly start toward the house.b) in this brief fraction of a moment they take the first step toward performing a metamorphosis that changes people from a group into a mob.c) they begin to head purposefully across the street toward the house at the end.d) the people stop as a group, seem to pause for a moment and then much more quietly and slowly start to walk across the street.