A smartphone user is experiencing issues getting an application to launch. When the user taps on the application name, nothing happens. The user recently updated the smartphone's OS. Which of the…

Rolling back an OS update is a drastic measure and should only be considered after simpler troubleshooting steps have failed, as it can be complex and potentially cause data loss.

Uninstalling and reinstalling the application is a valid troubleshooting step, but restarting the device is simpler and less disruptive, and often resolves such issues first.

Restarting the smartphone can clear temporary software glitches, refresh system processes, and reinitialize services that might have become unresponsive or improperly configured after an operating system update, often resolving application launch issues.

While a pending application update might fix compatibility issues, checking for it should typically follow a simple restart to ensure the current version has a clean state to run in.