Alex maintains a professional LinkedIn profile where he ensures that his work experiences is updated as well as his skills and accomplishments he connect with colleagues and engaged in industry related discussion by reposting interesting articles and commenting on discussion thread which of the following describes Alex's digital foot print

Active digital footprint
Passive digital footprint
Localised digital footprint

Active digital footprint

Based on the given information, Alex's digital footprint can be described as an active digital footprint.

An active digital footprint refers to the intentional and deliberate actions by individuals to create and shape their online presence. In this case, Alex is actively maintaining his LinkedIn profile, updating his work experiences, skills, and accomplishments. He is also actively engaging with colleagues by connecting with them, participating in industry-related discussions, reposting articles, and commenting on discussion threads.

Through these actions, Alex is actively contributing to his online presence and leaving a digital trail that showcases his professional interests, expertise, and networking efforts. This active engagement helps to build a positive and comprehensive digital footprint, which can benefit Alex in terms of professional opportunities, networking, and visibility within his industry.