Automobiles were first invented in the 1800s. they greatly increased how fast people and products could travel from one place to another. because of this, automobiles businesses function and grow quickly. however, automobiles also have had negative effects. what is one negative effect of automobiles? a. the amount of money they generate for the economy b. the fact that sometimes they don’t go as fast as you want them to go c. the amount of time they take off of travel time d. the amount of air pollution they emit