Which of these does the speaker of "walking around" not use as a symbol of the artificial?
a. elevators
b. gardens
c. automobiles
d. glasses

The correct answer is C. Automobiles

Neruda uses all three mentioned there, including stores and goods. Depending on the translation, you might find spectacles instead of glasses, but the point remains. He says he doesn't want to look at them no more and wants to lie still like stones or wool.