The absolute age of a rock is expressed with numerical age, in years. Correct answer: A The absolute age of rock or any material on Earth l is a measure of how old it actually is in years.
However, the relative age is more simpler because it uses superposition to tell you that one rock layer is older than another.
Why? Dodo birds give it away, Dodo birds was hunted to extinction because there was no competition of where they lived for their coats and it was very easy to hunt them since they had no self defense.
Mid-ocean ridges form along divergent boundaries aka where two plates are pulling away for one another so I'm assuming it's A "Where two oceanic plates move apart"