Which of the following statements is true regarding digital footprints?

Digital footprints refer to the trail of data and information that users leave behind while using the internet. These footprints can be created through a variety of online activities, such as browsing websites, posting on social media, or interacting with online services.

The statement indicating that digital footprints can be monitored by various online services is accurate because many platforms and companies track user behavior to improve their services, personalize advertisements, or gather analytics data. For example, web browsers use cookies to monitor user sessions, and social media platforms analyze user interactions to curate content and ads.

The other options do not reflect the true nature of digital footprints. They are not completely invisible to users; in fact, many online tools provide visibility into aspects of a person's digital footprint. While user-generated content is a part of digital footprints, they also include passive data collected without user input. Additionally, while some aspects of a digital footprint can be challenging to change or delete, they are not entirely immutable; users have the ability to manage their digital presence to some extent by deleting accounts, adjusting privacy settings, or clearing browsing history.