What does "peel off" suggest?

The phrase "peel off" suggests the action of removing something in layers or strips. This expression is commonly used when talking about things like skin, paint, or any other material that can come away in sections. For example, when you peel an orange, you remove the outer skin in a manner that often results in layers coming off. This concept of layering is intrinsic to the meaning of "peel off," highlighting the act of gradually taking something away rather than doing so all at once.

In contrast, the other options do not align with this definition. Sticking on firmly implies adhesion rather than removal, adding to something indicates an increase rather than taking away, and breaking apart suggests a different kind of disintegration that isn't specific to layers. Thus, the understanding of "peel off" revolves around gradual removal, making the correct choice the most fitting in context.