For Apple OS X:

  • Click on the Safari menu in Safari and then click on Preferences.
  • Click on "Privacy". 

  • Leave unchecked the "Block all cookies" tab. 

  • Restart Safari.

Done, you have enabled cookies in Safari on your Macbook.

Additional changes in Safari:

  • Go to the Safari drop-down menu and select Preferences Option.

  • Click Privacy in the top panel and Uncheck the 'Prevent Cross Site tracking' box.

For increased security, once you have finished taking the test, please check 'Prevent Cross Site tracking' box.