The writer wishes to include the following sentence in the essay:
When you’ve had your fill, you can simply stride right into the nearest Metro station, look at the map, and head straight for home.
This sentence will fit most smoothly and logically into Paragraph:
F. 1, before the last sentence.
G. 2, after the last sentence.
H. 3, before the last sentence.
J. 4, before the last sentence.