Final answer:
Social media updates are the best example of active data sharing and collaboration using smartphones and wearables. These updates enable active engagement within a digital community in contrast to other choices which do not involve real-time sharing.
Correct option is c) Social media updates
Step-by-step explanation:
The question relates to active data sharing and collaboration through the use of smartphones and wearable technology. Among the options given, social media updates is the best example of active data sharing and collaboration. When individuals share updates, comment, like, or message on social media platforms, they are actively participating and engaging in a digital community, often in real-time. This contrasts with passive location tracking which occurs without user engagement, personal health apps which may not involve sharing with others unless specifically set up to do so, and offline document storage which by its nature is not about active sharing or collaboration.
Furthermore, the question about collective behavior is separate from the discussion of technology and active data sharing. However, collective behavior refers to actions taken by a group of people. Among the options listed, a group of people interested in hearing an author speak is an example of collective behavior, as it involves people temporarily coming together with a shared interest or purpose.