Which term best describes a "holographic will"?

A holographic will is indeed best described as a handwritten will made without witnesses. This type of will is typically created by the testator (the person making the will) and does not require the formalities of being witnessed or notarized, which are often necessary for other types of wills.

The primary characteristic of a holographic will is that it reflects the testator's personal intentions and is written in their own handwriting, which can serve to verify authenticity. In many jurisdictions, as long as the key components of a will are present (such as a declaration of the will and the signature of the testator), it can be valid as a holographic will.

Other types of wills, such as formal wills, must comply with specific legal requirements, including witness signatures or notarization to ensure their validity. The definition does not pertain to whether a will can be revoked, as most wills (including a holographic will) can be revoked if the testator chooses to create a new one or takes specific legal steps to do so. Thus, the distinctive feature of a holographic will focuses on its handwritten nature and the absence of witnesses, making the explanation of the correct choice clear.