Question

which statement is true about radiocarbon dating? after it dies, an organism’s body continues to intake c-14. radiocarbon dating is useful for dating objects up to 100,000 years old. radiocarbon dating assumes that half-life for radioisotopes change over time. the half-life of c-14 is 5,730 years

Explanation:

1. Analyze the first option: After an organism dies, it stops intaking C - 14. So this statement is false.
2. Analyze the second option: Radiocarbon dating is generally useful for dating objects up to about 50,000 - 60,000 years old, not 100,000 years old. So this statement is false.
3. Analyze the third option: Radiocarbon dating assumes that the half - life of radioisotopes (specifically C - 14 in this case) is constant over time. So this statement is false.
4. Analyze the fourth option: The half - life of carbon - 14 (C - 14) is indeed 5,730 years. This is a well - known fact in the context of radiocarbon dating.

Answer:

The half - life of C - 14 is 5,730 years