Final answer:
Video and audio aspects are examples of contextual elements as they add a fuller context to the core content, enhancing user comprehension.
Step-by-step explanation:
An example of a contextual element in the context of a website or online platform could involve features that provide an additional layer of understanding or information to enhance user experience and comprehension of the content. While options like website navigation, facilitating commerce, video and audio aspects, and live chat features all integrate with a website's functionality, the feature that specifically adds context to the core content would be video and audio aspects. This aligns with the description provided by the Link to Learning features, which directs students to online interactive exercises and animations that add a fuller context and core content and provide an opportunity for application.