To solve this question, the user needs to have knowledge of HTML tags and how they are applied in web development.

The correct answer is:

B. Closing

Explanation:

In HTML, tags are used to define elements and their properties. The browser applies the feature of an opening tag until it encounters its corresponding closing tag. The closing tag is indicated by adding a forward slash (/) to the tag name before the closing angle bracket (>). For example, to define a paragraph in HTML, you would use the opening

tag and the closing

tag.

Therefore, option B, Closing, is the correct answer.