To determine the number of tabs in the Test Settings window, we can refer to the File->Settings menu.
Option A) 7 - This option is correct. The Test Settings window typically contains 7 tabs.
Option B) 6 - This option is incorrect. There are more than 6 tabs in the Test Settings window.
Option C) 5 - This option is incorrect. There are more than 5 tabs in the Test Settings window.
Option D) 8 - This option is incorrect. There are fewer than 8 tabs in the Test Settings window.
Therefore, the correct answer is A) 7, as it accurately represents the number of tabs in the Test Settings window.