1. The Venn diagrams are used for both classification and comparisons. Don't limit to only one of them.
2. Venn diagrams don't have to be circles.
3. You need to draw the universal set.
4. Venn diagrams don't have to be very simple. It's okay to complicate the Venn diagrams in order to capture the classifications and the comparisons.
I would say that the answer is #2
The three appeals are logos, ethos, and pathos.
Pathos is an appeal to emotion, ethos is an appeal through your own credibility, and logos is an appeal to logic.
Logos is the answer you're looking for.
After Gregor has died and freed his family of his horrendous presence, they can now take a rest for a while and get back to their normal lives. Gregor had been a burden for them in every way, as he stopped providing for them because of his new condition. Because of him, they couldn't leave the apartment and find a smaller one. Because of him, they had to rent a part of the apartment. His unwilling transformation had changed their lives for the worse. Now that he's gone, they have a hope for a better life. They even start pondering on their daughter's potential marriage.
