To solve this question, the user needs to know the basic structure of HTML and how tags work. In HTML, the opening tag is used to define a specific feature or element, and the closing tag is used to indicate the end of that feature or element. This creates a nested structure in which the content within the opening and closing tags is affected by that feature or element.

Now, let's go through each option and explain why it is right or wrong:

A. Quit: This option is incorrect because there is no HTML tag named "Quit". Therefore, the browser would not apply the feature of a tag until it encounters a Quit tag because it does not exist.

B. Closing: This option is correct. The browser applies the feature of a tag until it encounters its closing tag. For example, if an

tag is used to define a heading, the browser would apply the formatting of the

tag to the text until it encounters the closing

tag.

C. Exit: This option is incorrect because there is no HTML tag named "Exit". Therefore, the browser would not apply the feature of a tag until it encounters an Exit tag because it does not exist.

D. Anti: This option is incorrect because there is no HTML tag named "Anti". Therefore, the browser would not apply the feature of a tag until it encounters an Anti tag because it does not exist.

E. Deactivate: This option is incorrect because there is no HTML tag named "Deactivate". Therefore, the browser would not apply the feature of a tag until it encounters a Deactivate tag because it does not exist.

The Answer is: B (Closing)