What action constitutes willfully damaging another person's property?

The action of slashing car tires out of anger clearly constitutes willfully damaging another person's property because it is a deliberate act intended to harm or destroy someone else's belongings. Willfulness implies that the action is done on purpose with knowledge that it will cause damage. In this scenario, the individual is actively choosing to engage in destructive behavior, motivated by anger, and fully aware of the consequences that their actions will have on someone else's property.

The other choices do not meet the standard for willful damage. Ignoring a request to leave someone’s property does not inherently involve damaging the property itself. Breaking a window by accident indicates a lack of intent to cause harm, which differentiates it from willful damage. Lastly, not maintaining one’s own property relates to neglect rather than an intentional act of destruction towards someone else's property. Thus, only the act of slashing tires fulfills the criteria for willfully damaging property.