Which of the following gates can be used to create an inverter?

A NOT gate is specifically designed to function as an inverter in digital circuits. Its primary role is to take a single input and produce an output that is the opposite of that input. If the input is high (logic 1), the output will be low (logic 0), and vice versa. This simple yet critical operation forms the basis of many digital systems where negation or inversion of signals is necessary.

While other logic gates like NOR or NAND can also serve to create inverter-like functionality through combinations or configurations of inputs, the NOT gate does this directly and uniquely. It performs the inversion function without requiring additional inputs or extra complexity, making it the most straightforward and efficient choice for creating an inverter.

This clarity and simplicity of operation distinguish the NOT gate as the correct answer in this context.