Which phrase describes the absolute age of a rock?

1does not provide an exact age

2is the number of years since it formed

3is the age compared to other rocks around it

4indicates whether it is younger or older than the rocks above it

Answer: 2 is the number of years since it formed

Absolute dating can be defined as an age estimation method which gives the age of the fossil evidence on the basis of studies based upon the chronology of past geological events by examining various physical forms such as strata of sediments or rocks. The absolute dating of the earth material is a measure of how old the material is in years. This method of dating gives an accurate age of the specimen under concern. It is also called as calendar dating or chronometric dating.

On the basis of the above information, the phrase which describes the absolute age of a rock is the number of years since it formed.