What do you think policymakers expected would happen when they deregulated the trucking industry?

Deregulation is the process of taking government power out of a particular industry.  If there were deregulations within the trucking industry there would be more competition within.  Not only that, there would be less rules to make sure the truckers are following their weight limited, aren't carrying things that they shouldn't be or are illegal. if the trucking industry was not regulated there would be a tougher time in making sure stores were delivered goods as needed.

i think the answer to your question is b. directive