Read the excerpt from "Healthy Eating." So why don't we just eat better?

"It's easier for someone to unwrap a granola bar than to unwrap an orange," Rarback says. "We've gone for easiness. Parents want children to get what they need, so if they see an ad saying something is fortified with vitamins, no one's doing an equivalent [ad] for an orange or bananas."

What is the main reason why the author includes this information in the article?
to show how difficult it is to get a full serving of fruits and vegetables
to explain why people are making unhealthy choices with their food
to show how simple it is to eat nutritious foods and a balanced diet
to explain why packaged food items are so harmful to our health