Which of the following are indoor WatchGuard AP devices?

The correct choice is all of the listed options, as all specified devices—AP100, AP200, AP102, and AP300—are designed for indoor use within the WatchGuard wireless access point (AP) lineup.

Indoor access points generally cater to a variety of environments such as offices, classrooms, and retail spaces, focusing on efficient coverage and connectivity within a limited range. In this case, each of the mentioned AP devices is engineered to support indoor applications, providing reliable wireless service suitable for moderate to high-density networking environments.

This collective option encapsulates the full range of available indoor AP models from WatchGuard, emphasizing the manufacturer's focus on delivering versatile solutions that meet different user needs in indoor settings. As such, each individual model contributes to the overall capability and functionality expected from WatchGuard's indoor access points.