1. A 42-year-old wom an had been recovering from breast cancer surgery. Because her postoperative pain was severe, she received an intravenous injection of ketorolac that was able to reduce the pain....

1. A 42-year-old wom an had been recovering from breast cancer surgery. Because her postoperative pain was severe, she received an intravenous injection of ketorolac that was able to reduce the pain. Which of the follow ing m olecular actions m ost likely m ediated the analgesic e ect of the drug? A. Drug binding to prostaglandin receptors in the surgical area B. Decreased concentration of prostaglandins in the surgical area C. Decreased oxygen radical production in the surgical area D. Inhibition of prostaglandin biosynthesis in the central nervous system E. Lowering of anxiety, fear, and su ering evoked by pain