Biology

The correct answer is: A.By causing changes in the DNA base sequence

Explanation:

Carcinogens and radiation increase the risk of mutations primarily by causing changes in the DNA base sequence. These changes can result in alterations in the genetic code, leading to faulty or dysfunctional proteins that may disrupt normal cell functions. This can increase the risk of uncontrolled cell division and, in the case of carcinogens, lead to the development of cancer.

Here’s why the other options are incorrect:

B.By increasing cell division: While mutations ...