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

A valid will in Ontario must adhere to specific formal requirements to ensure its legality and enforceability. The necessity for a will to be signed by the testator is a fundamental requirement that establishes the document as the testator's own intention to create a will. Similarly, the requirement for two witnesses is crucial, as their presence is intended to prevent fraud and to affirm that the testator was of sound mind during the signing.

Another key requirement is that the will must clearly indicate the intention to dispose of property, which is essential to signify that the testator desires to allocate their assets after their death.

In contrast, notarization is not a formal requirement for a valid will in Ontario. While a notarized will may carry certain advantages, such as providing evidence of execution, it is not necessary for legal validity. Therefore, the option referring to notarization as a requirement for a valid will is appropriate because it highlights that other aspects, such as proper execution and intent, are sufficient for a will to be valid.