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Which of the following is the relatively most accurate method for dating of fossils?

1. Radio-carbon method
2. Potassium-argon method
3. Electron-spin resonance method
4. Uranium-lead method

Correct answer: Uranium-lead method

Solution

Uranium-lead dating is considered relatively most accurate because it has very long half-lives and can date very old geological materials with high precision. Carbon-14 is only useful for recent fossils, while potassium-argon and electron-spin resonance are less universally precise for the oldest samples.

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