Answer:
"They showed what it meant to be Greek, and what it meant to be human."
A. Flash mobs seem both interesting and safe, unless participants are irresponsible.
The answer would be C. The committee's bickering was seriously impeding any real progress.
impede would translate to preventing...such as preventing progress.
awaited, and it's not a linking verb
Well, the radio could have a different tone than the novel. The novel could be informative or based on an experience. The radio could be wrong or not-specific with the War of Worlds.