Final answer:
The selegiline patch is administered via the transdermal route, where the patch is applied to the skin for drug absorption.
Step-by-step explanation:
The route of administration for the selegiline patch is the transdermal route. This method involves applying the patch to the skin, from where the drug selegiline is absorbed into the body. It is a convenient alternative to oral or injectable routes, making it easier for patients to adhere to their medication regimen. Transdermal delivery systems have been significantly enhanced over the years, providing controlled release of medications such as selegiline, which is used in the treatment of Parkinson's disease and major depressive disorder.