The skull symbolizes the great and famous victory they had during the war. The poem used the phrase "great victory" and "famous victory" many times. Famous in the sense that even younger ones like Wilhelmine and Peterkin would know because the skulls they saw become the proof of their great victory and is the cause of their freedom.
The best answer shown is C because a group discussion only works well when others disprove other people while being kind about it
The last paragraph where he says he was trying to get fired all summer is where you can see that he doesn’t like his job
The subordinate clause here is 'after becoming a member of the Honor Society', and it is B, adverb clause. Because it denotes the time when the action happened, that is, when he emailed his aunt.