Which of the following is true about the yield statement?

The yield statement is a key component in Python for creating generator functions. When a function contains a yield statement, it provides a way to pause the function’s execution while maintaining its state, allowing it to be resumed later. This is different from a regular return statement, which terminates the function completely and loses all local state.

When the yield statement is encountered, the function’s current state—including local variables and the current point of execution—is saved. The function can be called again, and execution will resume right after the yield statement. This feature is particularly useful for generating sequences of values on-the-fly, which can lead to more memory-efficient code compared to returning an entire list of values at once.

The other statements about yield are not accurate: it does not terminate the function; it can be used in any user-defined function, not just built-in ones; and while it may serve a purpose similar to a return statement, it behaves quite differently in terms of saving context and state.