The correct answer is this one: "human industrialization." Air pollution comes from human industrialization. Because of too much industrialization, there are a lot of excess and wastes in any form: air or even liquid and solid wastes.
I'm going to answer this based on context, so it may not be accurate, but it's how I feel.
Eduardo doesn't communicate with his partner. He gets frustrated. Then he's filled with resentment. His partner is unaware. The relationship most likely won't be good from this point unless Eduardo learns to communicate with his partner. Otherwise, the relationship will most likely be out the window in a while.
Hope that helped! :)
Have a good day! :)
DISCLAIMER: ALWAYS. Heck with a reliable source!
People rather sit on their phones and not go outside or go to social events with others ...
