Which of the following scenarios demonstrates a deadly weapon?

The scenario where an adult strikes another with a heavy object illustrates the concept of a deadly weapon. In legal terms, a deadly weapon is any object that can cause serious bodily harm or death when used in a manner that is likely to result in such harm. The action of striking another person with a heavy object demonstrates both the intent to cause harm and the capacity of the object to inflict serious injuries.

This scenario is distinctly different from the others. For instance, a child throwing a snowball does not typically involve a serious threat of harm, as snowballs are generally seen as benign and not capable of causing injury. Moreover, threatening someone with an unopened umbrella does not constitute the immediate capacity to cause harm, as it is not being used violently at that moment. Lastly, a defendant calmly arguing with a stranger does not involve any physical action or intent to cause harm, thus lacking the elements required to qualify as use of a deadly weapon. Therefore, the striking of an individual with a heavy object clearly meets the definition of demonstrating a deadly weapon.