Comprehensive and Detailed Explanation From App Development with Swift domains:

This question belongs to View Building with SwiftUI , specifically the objective about using property wrappers such as @State, @Binding, and @Environment to manage and share data between views.

The correct answer is @Environment because it is used to read values provided by the system or the surrounding view environment. These values can include device-related or system-provided information such as size classes, color scheme, locale, and dismiss actions. In SwiftUI, @Environment gives a view access to contextual information that it does not own directly, but which is supplied by the framework or ancestor views.

The other options are not correct for this purpose:

@State is used for local mutable state owned by the current view.

@Binding is used to create a two-way connection to state owned elsewhere, usually in a parent view.

@StateObject is used to create and own an observable reference-type object for the lifetime of the view.

So if you want a SwiftUI view to read data coming from system or device settings, the correct property wrapper is @Environment .