The correct answer is: Building a widespread transit system.
The reason is that building this type of system will surely help reducing Florida's air pollution. When public transport works well, most people feel encouraged to use it. As a consequence, less private transport is used, what means that there would be less vehicules on the roads, less air pollution and less use of energy.
Herbert Spencer was an English Biologist, Philosopher and Sociologist. He used Darwin’s law of evolution and was known for his dogma of Social Darwinism. He proposed that a society will evolve over time as in the case of living organisms.