A computer is built up from layers of components, like a CPU, logic circuits, logic gates, and transistors.

Which of these is the best description of a logic gate?

Choose $1$ answer:

It receives data from input devices, processes & stores it$,$ and sends results to output devices.

It converts an electrical signal into a $0$ or $1$ based on the amount of voltage going through it$.$

It outputs $0$ or $1$ based on input values and a Boolean function.

It outputs a $0$ or $1$ based on the combination of multiple logic gates.