In MobX, a piece of state that can be observed for changes is marked as ________.
- Constructor
- Immutable
- Mutable
- Observable
In MobX, a piece of state that can be observed for changes is marked as an "observable." Observables are used to track changes to state and automatically update any components that depend on them. This is a key concept in MobX, enabling reactive and efficient updates to the user interface based on state changes.
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