What must you do to ensure all elements in a group are selectable?

To ensure all elements in a group are selectable, grouping the items together is the key step involved. When elements are grouped in PowerPoint, they form a single unit that allows for efficient manipulation and selection as a whole. This means that rather than having to click on each individual element separately, one can simply click on the group to select all the elements simultaneously.

The grouping feature is designed for convenience, especially when working with multiple objects that need to be moved, resized, or formatted together. Once objects are grouped, you can select the entire grouping with one click, making it easier to manage your designs and layouts.

In contrast, ungrouping the items would break this connection and make each element independent, which is not what is needed for ensuring they are all selectable as a unit. The "Format" options do not inherently affect the selectability of grouped items; rather, they are used to change appearance properties. Changing the layer order might allow you to select items that may be obstructed by other elements, but it does not impact whether grouped items can be selected as a whole.