Which of the following best describes 'testate'?

The term 'testate' specifically refers to a situation where an individual has made a will prior to their death. This legal document outlines how the person's assets and properties should be distributed upon their demise, indicating their wishes regarding the distribution of their estate. When someone dies testate, it means that their estate will be managed according to the instructions laid out in their will, which is essential for ensuring their desires are met and can help streamline the probate process.

The other options do not accurately reflect the meaning of 'testate.' For instance, the definition of not having a will at the time of death describes an intestate situation, while leaving behind an estate plan may involve other forms of planning such as trusts, which do not necessarily indicate the presence of a will. Disputing a will does not concern the state of having a will or not, but rather involves the contestation of an existing one. Hence, the best descriptor of 'testate' is having a will at the time of death.