Where are the values of screen variables and widgets reset to their default values?

The correct answer is that the values of screen variables and widgets are reset to their default values at the destination, which is the current screen. This is a fundamental aspect of the OutSystems platform's behavior regarding screen lifecycle and state management.

When navigating to a new screen, the system ensures that any screen variables and widget states are initialized to their default values as defined during the screen's configuration. This is crucial for maintaining a consistent experience for users, as it prevents old data from persisting and affecting the new context in which the user is interacting. It helps ensure that each user interaction begins with a clean slate, allowing for better control over how data is handled and displayed.

In contrast, other options like the end node, start node, and before aggregation may pertain to specific parts of a flow or screen transition but do not directly relate to resetting the values of screen variables. The start node typically serves as the entry point of a flow, while end nodes indicate the conclusion of a process, and before aggregation refers to a stage in data processing, which does not involve resetting screen variables to defaults.