Scientists use various methods to determine the age of matter. Which method below would a scientist most likely use to determine the absolute age of a rock layer? 1.Identify the oldest fossilized remains in the rock layer.

2.Measure the magnetic strength of the material in a sample of the rock.

3.Compare the amount of stable daughter elements present with the amount of radioactive parent elements.

4.Compare the composition of the rock sample with other rock samples of known age.