The correct answer is B) Smog has not affected Canada because Canada’s overall climate is too cool for air pollution.
The statement about industry and production in the United States and Canada that is false is "Smog has not affected Canada because Canada’s overall climate is too cool for air pollution."
That statement is false because smog has indeed affected major cities in Canada; not as much as US citizens such as Los Angeles, New York or Chicago, but Toronto has increased its pollution levels recently. Industry, car emissions, energy plants, and fire in their forests have increased smog in some Canadian regions. Indeed, in 2010, the government of Canada published a report called "Air Pollutant Emission Summaries," where they identify the more polluted areas of the country.