The technique called radiometric dating is based on

a) the formation of radioactive molecules in rocks after they are deposited.
b) the use of fossils of known age to determine how fast carbon-14 decays.
c) the assumption that radioactive isotopes accumulate in fossils at a constant rate.
d) the steady, clocklike decay of certain radioactive isotopes over time.

D) the steady, clocklike decay of certain radioactive isotopes over time.

Explanation:

Geologists use radiometric dating to estimate how long ago rocks formed, and to infer the ages of fossils contained within those rocks.

For example, when rocks are formed, such as igneous rocks (formed when molten rocks cools), certain radioactive atoms are trapped inside the rocks during this formation process. Then these radioactive atoms decay over time.

The age of the rock can be estimated by comparing the occurring radioactive isotope within the material to the abundance of its decay products, which form at a known constant rate of decay.

From the options;

A) this is about the formation of the radioactive molecules and not about radiometric dating

B) this is radiocarbon dating (cabon dating/carbon-14 dating)

C) the assumption is wrong since the radioactive isotopes decays not accumulate.

D) the corect option as I explained earlier.

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