A piece of icon or image on a web page associated with another webpage is called : 

The correct answer is option 2: hyperlink

Key Points

• A hyperlink is an element in an HTML document that links to another location, which can be another page, section, or resource.
• An icon or image can be made clickable by wrapping it with an anchor tag <a> to act as a hyperlink.
• Example: <a href="https://example.com"><img src="icon.png"></a>
• This enables users to click the image to navigate to another page or resource.

Additional Information

• URL: Stands for Uniform Resource Locator – it is the address of a resource on the internet, not the clickable element itself.
• Plugin: A software component that adds a specific feature to an existing program (like Flash or PDF viewer) – unrelated to linking images.
• None of the above: Incorrect because hyperlink is the valid and correct term.

Hence, the correct answer is: option 2: hyperlink