What has become the preferred way to present actions to users?

Scenario: The Firefox browser is being used to display a web page with a video but the video does not play. Read the following code snippet and select the reason for the incorrect display from the choices below.

``` ``` a. The controls attribute should be controls=”yes” b. There are too many source elements. c. The file extension .ogg is incorrect. d. The MIME type values are incorrect.

Which command is used to display two different parts of the same document in the document window?

A. Two Pages B. Divide C. Split D. Double Window