maioresodit
What is the tone of the passage?
I am confused in negative vs a balanced tone as I can see opinion of the author with some kind of predictions and a strong suggestion about the Mexico.
I'd say the tone is
mainly analytical and measured, with a
slightly cautionary turn near the end.
Your confusion is coming from the last paragraph. Yes, the author gives an opinion there and says Mexico “must” do certain things. But that does not make the passage negative. A negative tone would sound condemning, hostile, or strongly critical. This passage mostly explains a demographic shift and its possible effects, then ends with a warning that the outcome depends on what Mexico does next.
So the best way to describe it is: balanced/analytical overall, with a mild cautionary note at the end.