Radioactive Decay Can Be Used to Measure Which of the Following

Question

Radioactive decay can be used to measure which of the following?  
A) Chemical bonding
B) Time
C) Moisture
D) Pressure
E) Temperature

Accepted Answer

Radioactive decay is a spontaneous process that occurs at a constant rate. The rate of decay can be used to measure time, as the amount of radioactive material decreases over time at a known rate. This is the basis for using radiometric dating to determine the age of rocks and fossils.