Explanation
To navigate to the ES graphical Navigation Bar editor, you need to click the Configure menu in the ES app bar, then select General, and then select Navigation. The Navigation page allows you to customize the navigation bar of the ES app by adding, removing, or reordering the menu items. You can also edit the labels, icons, and links of the menu items. You can use the graphical editor to drag and drop the menu items, or you can edit the navigation XML directly. For more information, see Customize the navigation bar in Splunk Enterprise Security1. The other options, A, C, and D, are not correct. There is no Navigation Menu option under the Configure menu. The Settings menu does not allow you to edit the navigation bar of the ES app. The Settings menu only allows you to edit the navigation menus of the Splunk platform, such as the app launcher and the user menu. References = Customize the navigation bar in Splunk Enterprise Security Design navigation graphs | Android Developers1

Design navigation graphs | Android Developers

Explanation/Reference: https://docs.splunk.com/Documentation/ES/6.1.0/Admin/Customizenotables

Explanation/Reference: https://docs.splunk.com/Documentation/ES/6.1.0/Admin/Downloadthreatfeed

https://docs.splunk.com/Documentation/ES/6.4.1/User/Takeactiononanotableevent