Which of the following is NOT a requirement for a valid will in Delaware?

In Delaware, a valid will must meet specific legal criteria to ensure its authenticity and enforceability. One of those criteria is that it must be a written document reflecting the testator's intentions. Furthermore, it requires the signature of the testator, as well as the witnessing of the will by at least two credible witnesses who can attest to the testator's signing and mental capacity at the time.

The third option, which is the basis of the correct answer, suggests that a will can be valid based solely on the verbal consent of the family. This is not a requirement for a valid will in Delaware. While family members may discuss and agree on the terms or intent of a will, such verbal agreements do not fulfill the legal requirements necessary for a will to be deemed valid. A will must be formally executed with the necessary written documentation and signatures to protect against disputes and to ensure that the testator's wishes are honored. Thus, the absence of the requirement for verbal consent makes this option distinct from the essential elements needed for a valid will in the state.