A function MyFct that has an input x and an output z will return what?

The function MyFct, which takes input x and produces output z, is designed to return the output value it generates based on the input provided. This means that when the function processes the input x, it performs specific operations or computations to arrive at the output z.

Considering the options available, when referring to the output of the function, it is essential to understand that it signifies what the function evaluates and produces after processing its input. Since the question specifically asks what the function returns, the correct understanding is that the function is expected to return its output, which in this case is z.

While a function may receive values (in this instance, x), it returns only what it calculates or produces (namely z). Hence, the focus here is solely on the output of the function, which is crucial to defining its behavior and purpose within a programming context.