Which method for measuring the age of an object relies on isotopic elements present inside that object? A. rate of sedimentation B. law of superposition C. radioactive dating D. fossil comparison

## Step 1<br />The question is asking for the method that uses isotopic elements to measure the age of an object. Isotopic elements are atoms of the same element with different numbers of neutrons, which means they have different atomic masses but the same chemical properties.<br /><br />## Step 2<br />The method that uses isotopic elements to measure the age of an object is known as radioactive dating. This method is based on the principle that some isotopes are unstable and decay over time. This decay is measured in terms of half-life, which is the time it takes for half of the atoms in a sample to decay.<br /><br />## Step 3<br />By measuring the amount of decay in a sample, scientists can determine the age of the object. This method is used in various fields such as archaeology, geology, and paleontology to date artifacts, rocks, and fossils.