Respuesta :
Rocks older than 50,000 years old are objects in which geologists use carbon-14 dating to determine its age.
What is Carbon dating?
This is used to determine age by using the decay to nitrogen of radiocarbon (carbon-14).
Older rocks can have its age determined through the use of carbon-14 which is why option B was chosen.
Read more about Carbon dating here https://brainly.com/question/1122575
#SPJ2