Question 2

The function should have parameters x and y, and return the average.

To determine the average of two values, the function must accept those two values as parameters and then return their average.

A) Parameters: x, y Return value: average

This option is correct as it specifies that the function should take x and y as parameters, which are the values to be averaged, and return the calculated average. This aligns perfectly with the objective of the function.

B) Parameters: average Return values: x, y

This option is incorrect because it suggests that the function should take the average as a parameter and return the original values x and y. This does not fulfill the requirement of computing the average from x and y.

C) Parameters: none Return values: x, y

This option is incorrect as it implies that the function does not take any parameters, which means it cannot compute the average of x and y. Additionally, returning x and y does not meet the function's purpose.

D) Parameters: x, y, average Return value: none

This option is incorrect because it includes an unnecessary parameter, 'average', which is not needed for calculating the average. Moreover, it indicates that the function does not return a value, which contradicts the requirement to return the average.

Conclusion

Option A is definitively correct as it correctly identifies the parameters needed to compute the average and specifies the return value accurately. All other options fail to meet the fundamental requirement of the function, either by misrepresenting the parameters or by not providing the necessary return value.