Ibuprofen is the correct answer because Motrin is a brand name for the drug ibuprofen. Ibuprofen is a nonsteroidal anti-inflammatory drug (NSAID) that is commonly used to relieve pain, reduce inflammation, and lower fever. It is available over-the-counter and by prescription, and is used to treat various conditions such as headaches, menstrual cramps, arthritis, and minor injuries. Therefore, Ibuprofen is the correct answer as it is the generic name for the medication sold under the brand name Motrin.