What essential information must be included in a valid will?

The correct choice encompasses fundamental aspects necessary for creating a valid will. Testamentary intent ensures that the individual intended the document to serve as their last will and testament. It clarifies the individual's wishes concerning the distribution of their assets upon death. The appointment of an executor is crucial, as this person will be responsible for administering the estate, ensuring that assets are distributed according to the terms of the will, and managing any responsibilities regarding debts and taxes. Finally, a clear distribution of assets is necessary, as it specifies who receives what and avoids ambiguity that can lead to disputes among beneficiaries.

The other choices include elements that, while they may be important in certain contexts, do not constitute essential requirements for the validity of a will. Witness signatures can be required in specific jurisdictions to ensure the will’s authenticity, but simply having signatures does not encompass the will’s intent or execution properly. Notarization is helpful but is not universally required for a will's validity. Similarly, the publication in a legal newspaper and estate executor's license pertain to legal and administrative processes rather than directly impacting the validity of the will itself. The mention of a family tree and tax documentation is also unnecessary and irrelevant to the core components needed for a valid will. Thus, the inclusion of