Question

question 5 of 20 : select the best answer for the question. 5. radioactive isotopes in fossils decay at a constant rate. the ratio of radioactive isotope to stable isotope can be examined to estimate the age of the fossil or the rock it was found in. this is an example of ______ dating. a. magnetic b. relative c. precambrian d. absolute mark for review (will be highlighted on the review page)

Explanation:

• Option A: Magnetic dating relates to Earth's magnetic field changes, not radioactive isotopes. Eliminate A.
• Option B: Relative dating compares ages (e.g., layer order), not using isotope decay rates. Eliminate B.
• Option C: Precambrian is a geological time period, not a dating method. Eliminate C.
• Option D: Absolute dating uses radioactive isotope decay (constant rate) to calculate absolute age, matching the description.

Answer:

D. absolute