Which of the following examples uses the correct syntax for the anchor element?

The example showcasing the correct syntax for the anchor element is structured as follows: <a href="http://www.habitat.org"> Habitat </a>. This format adheres to the standard HTML conventions for creating hyperlinks.

In this syntax, the <a> tag identifies the anchor element, while the href attribute specifies the destination URL to which the link points. The URL is appropriately enclosed in quotation marks, which is essential for the HTML parser to correctly interpret the address. The text "Habitat" that appears between the opening and closing anchor tags is what users will click on to navigate to the specified link.

The other examples do not follow the accepted standards of HTML syntax. For instance, using the href attribute without quotation marks is technically invalid and can lead to inconsistent behavior in different browsers. Moreover, <anchor> is not a recognized HTML element; the correct tag is simply <a>. Lastly, using link as an attribute does not exist for anchor elements, since the correct attribute for linking is href. This demonstrates a clear understanding of how proper semantics and syntax work together in creating functional and valid web pages.