Final answer:
Politicians may be tempted to accept gifts of RR stock because it can provide them with financial benefits and can be used as a form of bribery. By receiving RR stock, politicians can profit from the success of the railroad industry.
Step-by-step explanation:
Politicians may be tempted to accept gifts of RR (Railroad) stock because it can provide them with financial benefits and can be used as a form of bribery. By receiving RR stock, politicians can profit from the success of the railroad industry, as the value of the stock may increase over time. In addition, accepting gifts of RR stock can create a political alliance between politicians and railroad companies, with politicians more likely to support legislation that benefits the industry.