Which of the following component is necessary for IOT devices?Select one:a.Joystickb.Lightpenc.Sensord.Plotter

The necessary component for IoT (Internet of Things) devices among the options given is c. Sensor.

Here's why:

a. Joystick - This is an input device primarily used for gaming. It's not necessary for IoT devices.

b. Lightpen - This is another input device used to select or modify text or graphics on a display screen. It's also not necessary for IoT devices.

c. Sensor - This is a crucial component for IoT devices. Sensors collect data from the environment, like temperature, light, motion, etc., and send it to the IoT device. This data is then processed and used to perform specific functions. For example, a temperature sensor in a smart thermostat can detect when the room temperature drops and automatically adjust the heating.

d. Plotter - This is a printer that interprets commands from a computer to make line drawings on paper. It's not necessary for IoT devices.