What is the primary function of an AND gate?

The primary function of an AND gate is to output 1 only if all of its inputs are 1. This means that for an AND gate to produce a high output (or true), every single input needs to be activated (meaning they all must be at a high state). This characteristic of the AND gate is fundamental in digital logic design, serving as a basic unit of operation in more complex circuits.

For example, if you have an AND gate with two inputs, the output will be 1 (or true) only when both inputs are at 1. If either or both inputs are 0 (false), the output will be 0. This behavior is crucial in scenarios such as forming decision statements and logical conditions in computer programs and digital electronics, where a certain condition must be met to continue processing.

Thus, the correct answer demonstrates the logical operation that defines the AND gate's functionality within the broader scope of digital logic systems.