Final answer:
The Dairy group from MyPlate is not a good source of folate. This vitamin is more abundantly found in other groups such as grains, proteins, and especially in vegetables.
Step-by-step explanation:
The MyPlate food group that is not a good source of folate is b) Dairy. While grains, proteins, and vegetables provide substantial amounts of folate, dairy products do not. Folate is a B-vitamin important for cell growth and metabolism, widely found in foods such as leafy green vegetables, fruits, nuts, and beans.
The MyPlate guidelines recommend a balanced diet with half of the plate consisting of fruits and vegetables, and the other half comprised of grains and proteins, with a serving of dairy on the side.
It's important to include a variety of food from each group to ensure you receive all the necessary nutrients. For example, vegetables like spinach, and grains like fortified cereals are particularly high in folate.