Final answer:
The best action to decrease the risk of cancer is to eat a wide variety of vegetables and fruits in generous quantities every day.
Step-by-step explanation:
The best action to take to decrease the risk of cancer is to eat a wide variety of vegetables and fruits in generous quantities every day. Fruits and vegetables are rich in antioxidants, phytochemicals, and fiber, which have been shown to reduce the risk of certain cancers. It is recommended to consume at least 5 servings of fruits and vegetables daily. By including a diverse range of fruits and vegetables in your diet, you can provide your body with the necessary nutrients to support a healthy immune system and protect against cancer.