Which of the following best describes a valid will?

A valid will is fundamentally defined by the testator's intentions as expressed through the document, which typically includes specific formalities necessary for its validity. The correct answer highlights that a will must be written and signed by the testator to be considered valid. This is grounded in most jurisdictions' legal requirements, which stipulate that the testator—who is the person making the will—must have the intention to create a will and must demonstrate that intention by signing the document.

While some jurisdictions do require additional formalities, such as the presence of witnesses, the key element is the testator's signature. This ensures that the wishes expressed in the will are genuinely those of the testator and prevents fraudulent claims. The requirement of writing further fortifies the will's legitimacy, providing a clear, tangible expression of the testator's desires for the distribution of their property upon death.

The other options, while related to the concept of a will, do not encapsulate the core requirements of validity as well as the chosen answer. For example, a will requiring two witnesses is relevant but not universally necessary, as some jurisdictions recognize holographic wills (handwritten and signed) that may not require witnesses. Moreover, a will being filed with the court or registered with