The Half-Life of ¹⁴C, a Radioactive Element of Carbon, Is

Multiple Choice

The half-life of ¹⁴C, a radioactive element of carbon, is approximately 5,000 years. The ratio of ¹⁴C to ¹²C in a fossil 25,000 years old would be _______ that of a living organism today.

A) the same as
B) 1/5
C) 1/8
D) 1/32
E) 5/1