Which statement is correct about the half-lives of radioactive elements?

Question

a. The half-lives of radioactive elements vary within a similar range of a few seconds.
b. The half-lives of radioactive elements with more neutrons become larger.
c. The half-lives of radioactive elements with more neutrons become smaller.
d. The half-lives of radioactive elements vary from fractions of a second to billions of years.

Answer 1

d. The half-lives of radioactive elements vary from fractions of a second to billions of years.