1. Your backyard is a Garden of Eden. (Biblical allusion)
2. I guess I should see this message about a new job as my burning bush. (Biblical Allusion)
3. When you feel betrayed by a friend, you can say, "You too, Brutus?" (allusion to Julius Caesar-Brutus betrayed Caesar)
4. You're a regular Einstein. (allusion to a historical figure)
5. When your parents learn about your new plan to raise money, it's going to sink like the Titanic. (allusion to a historical event)
The part of this excerpt that is directed against a particular social class in Ireland is "..I grant this food will be somewhat dear, and therefore very proper for landlords, who, as they have already devoured most of the parents, seem to have the best title to the children..."
In this part Jonathan Swift criticizes powerful and rich people, mocking landlords for being a part of a high social class.
The first one ( I am going to the store...) is the correct one.
