Question

To date a sedimentary rock layer between two igneous rock units, geologists use radiometric dating and assume that the sedimentary layer’s age _____.

is above that of the oldest of the two igneous units
is below that of the younger of the two igneous units
is between the absolute ages of the two igneous units

Answer 1

C is your correct answer

Step-by-step explanation:

Answer 2

The answer in finding the age of a sedimentary rock layer through radiometric dating can be assumed between the absolute ages of the two igneous units.

Sedimentary rocks don't have radioactive elements so the beast way to know the age is through understanding what can elements in between can provide as evidence