The Muckrakers were a group of journalists, who would 'rake up the muck' of the slums of america, or other areas, and try to expose it. An example of a muckraker is "The Jungle" by Upton Sinclair Jr, where the meat packaging industry is revealed to be extremely unsanitary and lurid.
I believe the answer is C.
One economic consequence that was related to the United States' demobilization after World War I is option<em> B. a rise in unemployment</em>. Many war supply industries suffered because their contracts were ended during the demobilization. More than 3 million factory workers lost their jobs and millions of soldiers returning home found themselves with no job.
