What will the horizontal and vertical lines represent when drawn on the canvas in the target function?

The correct choice, which indicates that the horizontal and vertical lines represent the current mouse coordinates along both axes, highlights an essential aspect of how coordinate systems function in graphical programming environments. In this context, drawing lines based on mouse coordinates is often used to visualize where the mouse pointer is positioned within the canvas.

When the target function is executed, it recognizes the current mouse position and translates those coordinates into horizontal and vertical lines, effectively creating a crosshair effect. This enables users to understand exactly where the mouse is located. Furthermore, this visual feedback can enhance user interaction, especially in gaming or animation environments where accurate mouse positioning is critical for gameplay or drawing actions.

The other options pertain to different functionalities: the trajectory of the moving ball would involve dynamic paths rather than static lines; the boundaries of the game area would usually be defined by fixed shapes or outlines rather than by the current mouse position; and the direction of snake movement is specific to movements in games like Snake, which relies on continuous direction changes rather than static lines. Thus, the correct answer effectively captures the role of the horizontal and vertical lines in visualizing mouse coordinates on the canvas.