In IoT, what is the purpose of wearable devices?

Wearable devices in the context of the Internet of Things (IoT) are specifically designed to measure and report data about the user's health, activity levels, environmental conditions, and more. These devices often include fitness trackers, smartwatches, and health monitors that gather various types of information, such as heart rate, steps taken, sleep patterns, and even blood pressure. By collecting this data, wearables help users understand their health and lifestyle, and this information can also be shared with smartphones or cloud services for further analysis or monitoring.

The other options do not accurately represent the primary function of wearable devices. While connecting multiple wired networks typically relates to network infrastructure devices, managing data storage refers to systems that handle information in databases or local storage, and facilitating wide area networking primarily deals with establishing long-distance networks, which are not the focus of wearable technology. Thus, the purpose of wearable devices centers indeed on measuring and reporting data, making this the correct choice.