The correct answer is: D. enormous scale
The number of devices that need to be managed and that communicate with each other will be much larger in the future. This is due to the increasing popularity of the Internet of Things (IoT), which refers to the network of physical objects that are embedded with sensors, software, and other technologies for the purpose of connecting and exchanging data. As more and more devices are connected to the internet, the challenge of managing and securing these devices will become increasingly complex.
The other options are not as relevant to the question. Option A, intelligence, refers to the ability of devices to learn and adapt on their own. Option B, connectivity, refers to the ability of devices to connect to each other and to the internet. Option C, dynamic nature, refers to the fact that the IoT is constantly changing as new devices are added and old devices are removed.
In conclusion, the correct answer to the question is: D. enormous scale.