Which tag is used to insert a single line break?

The tag used to insert a single line break is the "Br Tag." This tag is a self-closing element in HTML that does not require a closing tag. When the "Br Tag" is placed within a block of text, it creates a line break, effectively moving the subsequent text down to the next line without starting a new paragraph. This is particularly useful for formatting text where a simple separation of lines is needed without the added spacing that a new paragraph would create.

For example, if you want to list items but keep them closely formatted without extra spacing, you would use the "Br Tag" between them. This tag is essential for controlling layout in text-heavy content.

In contrast, other tags mentioned, such as the "Div Tag," are used for creating sectional divisions in the document structure, while "Details Tag" and "Caption Tag" serve specific roles in providing additional context or titles to objects like details or tables, rather than formatting line breaks.