Which of the following actions could constitute breaking?

The action of picking a locked door constitutes breaking because it involves a physical act of overcoming a barrier that has been intentionally secured. In legal terms, breaking is often defined as the act of making an entrance into a property or building that involves force or the use of tools to bypass locks or barriers. When an individual picks a lock, they are actively using a method to defeat a locking mechanism, which demonstrates intent to trespass and acknowledges the barrier that is meant to prevent entry.

In contrast, entering through an unlocked door, crawling through an open window, and stepping over a threshold do not constitute breaking, as they do not involve any forceful or deceptive action to gain entry. These activities imply access through means that do not violate any physical barriers or security measures. Thus, only picking a locked door aligns with the definition of breaking in a legal context.