Answer the following question given this paragraph: 

The age of a rock in years is its absolute age . Absolute ages are much different from relative ages. The way of determining them is different, too. Absolute ages are determined by radiometric methods, such as carbon-14 dating. These methods depend on radioactive decay.


Q: The age of a rock in years is its?

 Choices:

- geological age

- chemical age

- full age

- absolute age

A:
absolute age
