What action should be taken to open a patient's order?

To open a patient's order, double-clicking the row is the correct action because it typically serves as a standard method for opening detailed views or properties within various software interfaces. This approach allows the user to quickly access the specifics of the selected order, facilitating efficient data retrieval and management.

Double-clicking is commonly used in many applications as an intuitive way for users to interact with items listed in a table or grid view, such as patient orders. This action reduces the need for additional clicks or navigation, streamlining the workflow for healthcare professionals accessing patient information.

Other methods, such as right-clicking, may provide context menus but often do not directly open the order; similarly, pressing the "Enter" key typically serves to confirm a selection rather than open it, depending on the application's configuration. Selecting the order and clicking "Open" may work, but it often requires an extra step, whereas double-clicking is designed for quick access.