Which characteristic of potassium’s makes it useful for dating rocks

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"Which characteristic of potassium makes it useful for dating rocks?

It has a long half-life.

It decays at an unknown rate.

It produces lead as it breaks down.

It can be used to date all types of rock."

It has a long half-life.

Explanation:

The half-life of a radioactive element is the time interval in which a sample of that element is halved. This time interval is also called the semi-disintegration period.

As the radioactive elements disintegrate, over time, their quantity and activity are reduced and, consequently, the amount of energy emitted by it, due to radioactivity, is also reduced.

Potassium has a very long half-life and this makes potassium a perfect element for dating rocks.

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.