Diane is using an app that was developed by her company for internal use. She is running the app on her MacBook Air (13-inch, Mid 2013). The app quits
unexpectedly but never displays any error messages. The other apps on her machine work without issue and she has reproduced the issue with the app on another
machine. She wants to help her development group isolate the issue. Which of the following troubleshooting tools or techniques would you advise that she use to
best isolate the issue?

A.
Disk Utility

B.
Verbose mode

C.
Activity Monitor

D.
Console

Explanation:
If an app crashes on launch and no “unexpectedly quit” message ever appears, go to /Applications/Utilities and launch Disk Utility. From here, select your startup
volume and click on the First Aid tab. Then click on Repair Disk Permissions.