Hi can someone please explain what "medium" means in literature? how does a medium affect a story? and what are the connections between a medium and theme

Read the passage. tomorrow, senator connie sullivan will meet with us farmers to discuss a new trade deal. she will also discuss the state of iowa’s economy and the crucial need to modernize nafta. according to the us chamber of commerce, approximately 14 million jobs depend on trade with mexico. at a delegate meeting last wednesday, sullivan said, "this is a number much too large to ignore.” which sentence corrects the error in capitalization? tomorrow, senator connie sullivan will meet with us farmers to discuss a new trade deal. she will also discuss the state of iowa’s economy and the crucial need to modernize nafta. according to the us chamber of commerce, approximately 14 million jobs depend on trade with mexico. at a delegate meeting last wednesday, sullivan said, “this is a number much too large to ignore.”

What is the best summary of this monologue

Based on his npr interview,"astrophysicist chroniclesbattle over pluto," why does dr. tyson believe that pluto is america's favorite planet?