or the following choose the best answer: Reasons for high drug expenses are: Question 10 options: The fentanyl crisis, the rise in US drug prices, and the ability to gain lower prices in Mexico. Drug prescription Use, Rise in Drug Prices, and changes in the types of drugs prescridbe Illegal generic drugs sold on the streets, more supply than demand and the waste of prescription drugs ordered and not used. Older population use many prescription drugs, demand is outpacing supply and the incentives provided to physicians by drug companies to use higher priced drugs