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:

• Analyze each option:
• Option 1: After an organism dies, it stops intaking C - 14, so this is false.
• Option 2: Radiocarbon dating is useful for dating objects up to about 50,000 - 60,000 years old, not 100,000 years old, so this is false.
• Option 3: Radiocarbon dating assumes that the half - life of radioisotopes (like C - 14) is constant over time, so this is false.
• Option 4: The half - life of C - 14 is indeed 5,730 years, so this statement is true.

Answer:

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