Final answer:
Jana should consume more whole grains, fruits, and vegetables to increase her dietary fiber intake, which benefits health by reducing the risk of several chronic diseases. The correct answer is option a).
Step-by-step explanation:
To increase dietary fiber intake, Jana should focus on eating more whole grains, fruits, and vegetables. These are rich sources of both soluble and insoluble fibers, which contribute to various health benefits including reduced risks of chronic diseases like heart disease, colon cancer, and type 2 diabetes.
Whole grains not only provide fiber but also contain essential nutrients that are often lost in the refining process. Fruits offer a sweet alternative to processed snacks and have the added benefit of fiber, especially when consumed whole rather than as juices.
It's important for Jana to take advantage of food labels and online fiber counters to monitor her fiber intake to ensure she is meeting daily recommendations. By making these dietary changes, she can dramatically improve her fiber consumption for better overall health.