Final answer:
Deregulation of the trucking industry likely led to a decrease in the price of trucking services, potentially reduced earnings for truckers, and savings for consumers due to lowered transportation costs.
Step-by-step explanation:
After President Jimmy Carter deregulated the price floors in much of the trucking industry, several changes occurred. Deregulation meant that the government no longer controlled the prices that could be charged, which allowed for more competition among trucking companies.
As a result, the price of trucking services likely fell due to the increased competition. This could mean that truckers might have earned less money as companies reduced their rates to stay competitive.
For consumers, the deregulation potentially led to lower costs for goods transported by truck, which could mean consumers saved money when purchasing these goods. Therefore, all of the above options (a) the price of trucking services fell, (b) truckers earned less money, and (c) consumers saved a lot of money, are correct outcomes of the deregulation.