Compare and contrast radiometric dating with tree rings.

Uncalibrated radiocarbon measurements are usually reported in years BP where 0 (zero) BP is defined as AD 1950. BP stands for “Before Present” or “Before Physics” as some would refer to it. It should be noted that a BP notation is also used in other dating techniques but is defined differently, as in the case of thermoluminescence dating wherein BP is defined as AD 1980.

d. they are naturallyoccuring inorganic fuels like coal and petroleum.

the answer is c i just put d and i got it wrong so yeah its d