Answer:
D) All of the above
Explanation:
Lobbying has become a very widespread and powerful industry in the United States. According to several estimates, there are around 20 lobbysts per congress person in the United States, which says a lot about the power of lobbying.
Lobbying has spread to practically every industry: from energy, to logging, to banking, practically every sector in the economy has lobbysts in Washington and in state capitals representing their interests.