What is the correct order of activity lifecycle methods called when an app is opened and then exited using the back button?

The correct sequence of activity lifecycle methods when an app is opened and then exited using the back button is indeed characterized by option C: onCreate(), onStart(), onStop(), onDestroy().

When an Android app is launched, the activity goes through several lifecycle stages:

1. onCreate() - This method is called when the activity is first created. This is where you perform one-time initialization such as setting up the user interface and initializing components.

2. onStart() - This lifecycle method is called just after onCreate() and indicates that the activity is about to become visible to the user. It is used to start operations that should not be done while the activity is not visible, such as starting animations or refreshing data.

3. onStop() - When the user navigates away from the activity (like pressing the back button), onStop() is invoked. This indicates that the activity is no longer visible, and this is where you can save data or release resources that are not needed when the activity is not in the foreground.

4. onDestroy() - Finally, when the activity is being destroyed (which can occur for various reasons such as the user pressing the back button), onDestroy() is