C)That their family line has not branched out
Answer:
The correct answer is Option D, "By being presentable and appearing able-bodied, the individuals still had hope they could escape a terrible fate". That was the message that Spiegelman trying to convey in the panel. Generally speaking, Spiegelman sees the Jews as the innocent prey and the Nazis as the cunning predators.
He is grieving and doesn't want to be bothered at the love of his lifes' grave