To clearly illustrate that the graph has been moved down 3 units from the parent function \( y = 22 \), the key feature to consider is the y intercept.
The y-intercept is where the graph crosses the y-axis, and moving the graph down 3 units would change the y-intercept from \( 22 \) to \( 19 \) (since \( 22 - 3 = 19 \)). This change in the y-intercept directly demonstrates the vertical shift of the graph.
So, the best answer is: • the y intercept