What must extrinsic evidence do according to the plain meaning rule?

The plain meaning rule fundamentally states that the words in a will should be understood using their ordinary meaning, and extrinsic evidence is only necessary when a dispute arises regarding an ambiguity in the document. When a will is deemed unambiguous, it conveys its intent clearly through its language, and courts will generally refrain from considering extrinsic evidence in such cases. This ensures that the testator’s intentions as expressed in the will are upheld without alteration.

As a result, the presence of clear and unambiguous language in a will negates the need for extrinsic evidence, making it unnecessary to delve into surrounding circumstances or additional information that could modify or clarify the apparent meaning. This principle protects the integrity of the will by preventing extraneous interpretations that could lead to misrepresentations of the testator's true wishes.

The other answer choices do not align correctly with the rule as they suggest notions that are either extraneous to the application of the plain meaning rule or position extrinsic evidence in scenarios that are not relevant when a will is clear and unambiguous.