Explanation:

- Contents of a document: Typically, oral evidence cannot prove the contents of a document. Documents generally require the original or a certified copy for verification.

- Electronic statement: Oral evidence may explain or support electronic statements, but usually, the actual electronic record is needed.

- All facts except a): Oral evidence can prove many facts except when proving the contents of a document.

- Anything and everything: Oral evidence is not sufficient for proving all types of evidence, especially not the contents of a document or complexities of electronic records.

Option 3: All facts except a) aligns with common evidentiary principles because oral evidence can prove most facts except the contents of a document.

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