You are presented with the question "Which of the following can cause cancer?" and the following answer choices: 
- Birth defects
 - Smoking
 - cigarettes
 - radiation
 - Malnutrition
 - Pesticides
 - rays or beams
 - cancer pills

Now knowing that mutations that lead to cancer usually occur in genes that control the cell cycle and radiation destroys cells and can cause genetic mutations, choose the best answer.


 

    radiation     