How do you display hyperlinks without an underline?

The correct choice is based on the use of CSS (Cascading Style Sheets) to control the styling of HTML elements, specifically hyperlinks. In CSS, the text-decoration property is used to manage the visual decoration of text, which includes the presence of underlines in hyperlinks.

The syntax used in the correct answer effectively removes the underline from all anchor (<a>) tags by setting text-decoration to none. This means that any text within an anchor tag will no longer have an underline, which is commonly used to indicate links.

CSS properties must be spelled correctly, and the value none is the proper value for removing decoration. Incorrectly spelled properties or values, like "no-underline" or "underline:none," do not conform to CSS standards, therefore they will not produce the intended effect of removing the underline from hyperlinks. This is essential for ensuring that the styling is correctly applied and displayed as intended in a web document.