Question

Which statement best describes how radiation causes mutations?

Answer 1

Mutations are changes in DNA that produce weaker organisms that die, so
these are eliminated by evolution.

Answer 2

I don’t know the statements since you did not provide them, but here is how radiation causes mutations:

Lionizing radiation causes breaks in the DNA (particularly DSBs) that damages the genetic material in reproductive cells. This results in mutations that are passed from generations that can be inherited.