The court with probate jurisdiction over a decedent's estate is based in what location?

The court with probate jurisdiction over a decedent's estate is indeed based in the county of the domicile of the deceased. This is significant because probate courts are specially designed to handle matters related to the administration of estates, including the validation of wills, resolution of disputes over wills, and the distribution of assets among heirs.

The domicile of the deceased at the time of death is the determining factor for probate jurisdiction because probate laws are typically local and vary from state to state. The idea is that the probate process should be handled in the area where the deceased had their primary home, as this location is most familiar with the laws applicable to the estate as well as with local customs and expectations regarding estate handling.

In contrast, the other options do not serve as appropriate bases for determining probate jurisdiction. For instance, the county of the testator's birth may have no relevance to where the estate needs to be probated, and the state capital does not necessarily relate to the individual's residence. Additionally, federal district courts primarily deal with federal law issues, whereas probate matters typically fall under state law jurisdiction. Thus, the correct choice emphasizes the importance of the deceased's domicile in probate proceedings.