What is comprised of millions of smart devices and sensors connected to the internet?a.cloudb.data centerc.Internet of thingsd.edge network

To answer the question, let's analyze the options given:

1. Cloud: Refers to internet-based storage and computing services but does not specifically imply a vast network of smart devices and sensors.

2. Data Center: A facility used to house computer systems, but again, it doesn't represent a network of connected smart devices.

3. Internet of Things (IoT): This term directly refers to the vast network of interconnected devices and sensors that communicate over the internet, enabling data collection and exchange.

4. Edge Network: Refers to a network topology that places data processing closer to the data source but does not encompass the entirety of connected smart devices.

Conclusion

The correct answer is c. Internet of Things. This term specifically describes the ecosystem of millions of smart devices and sensors connected to the internet, allowing for seamless communication and data exchange.