The correct answer is: B. heterogeneity.
Heterogeneity is the characteristic of IoT devices that have different hardware platforms and networks. This means that IoT devices can be made from a variety of different materials, use different types of processors, and connect to different types of networks. This heterogeneity can make it difficult to manage and secure IoT devices, but it also allows for a wide range of applications and use cases.
Sensors are devices that can detect and measure physical or environmental conditions, such as temperature, pressure, or light. Sensors are often used in IoT devices to collect data about the environment.
Security is a key concern in IoT, as IoT devices can be vulnerable to attack. IoT devices can be used to launch attacks on other systems, or they can be used to steal data or control devices.
Connectivity is the ability of IoT devices to communicate with each other and with other systems. Connectivity is essential for IoT devices to be able to collect data, share data, and control other devices.
In conclusion, the correct answer is B. heterogeneity. Heterogeneity is the characteristic of IoT devices that have different hardware platforms and networks. This means that IoT devices can be made from a variety of different materials, use different types of processors, and connect to different types of networks. This heterogeneity can make it difficult to manage and secure IoT devices, but it also allows for a wide range of applications and use cases.