Final answer:
The recommended serving size for cooked leafy vegetables is 1 cup, in accordance with MyPlate guidelines which advise that half of a plate should be fruits and vegetables.
Step-by-step explanation:
The question asks about the recommended serving size for leafy vegetables, whether cooked or raw. According to the options provided, the correct serving size for leafy vegetables would be 1 cup when cooked. This is seen in the reference which mentions that Spinach, a type of leafy vegetable, is served in 1 cup portions when cooked. It's important to note that raw leafy greens like lettuce might have a different recommended serving size, which is often larger due to their lower density. When considering MyPlate recommendations, half of your plate should consist of fruits and vegetables, with leafy greens being an important component of the vegetable portion.