Which keyboard shortcut allows you to control the number of points on your star shape?

The correct choice allows you to directly adjust the number of points on a star shape in Adobe After Effects. When creating or selecting a star shape layer, you can use the Arrow Up and Arrow Down keys to increment or decrement the number of points of the star. This function is beneficial for quickly modifying the shape of the star without having to navigate through menus or property panels.

In contrast, other combinations, like using Ctrl or Alt, typically do not control the number of points in shapes, as these modifiers often serve different purposes in the After Effects environment, such as modifying selections or duplicating layers. Using Shift along with Arrow keys typically alters other properties or constraints, rather than directly impacting the star's point count. Understanding these keyboard shortcuts can greatly enhance your efficiency while working in After Effects.