The portion of the IoT technology infrastructure that focuses on how to transmit data is a. hardware. b. applications.

The correct answer is not among the two options listed above (hardware, and applications). The correct answer is "connectivity"

Explanation:

The answer would have been "hardware" if the portion of the IoT technology infrastructure focuses on sensors that take note of the changes in the environment the technology is used. I would have also been "applications" once it focuses on controlling what and how information is captured.

The IoT (Internet of Things) uses sensors, computer applications, and hardware to make devices interact processing and sending large data between computers, collecting data from their surroundings to update the system, and it also uses connectivity to transmit data. This technology is employed in so many fields like health care, Automobile industries, and so more. An example is Self-driving cars which allow devices to be connected to a cloud system.