You are presented with the question "How can we figure out how long a dinosaur has been dead?" and the following answer choices: 
- Measure the depth it was found
 - A set number of times
 - It remains dormant
 - Radioactive dating
 - Test the soil it was found in
 - Compare it to other dinosaurs
 - focusing a lens
 - Continents drifting

Now knowing that radioactive dating is used to determine the age of fossils and dinosaurs are the most popular fossils, choose the best answer.


 

    Radioactive dating     