Answer: B. Washed lettuce
Explanation:
A washed lettuce is a correct option because of the fact that it is a green leafy vegetable which is commonly used in salad. It can also be used in soups, sandwiches and wraps. It can be eaten raw and it is a rich source of vitamin K and A. The washing of lettuce will remove dust, dirt and other impurities and thereby the lettuce can be eaten raw.
A bread dough needs to be baked before eating, a frozen chicken also required to be cooked and a raw hamburger also required to be baked or grilled. Therefore, washed lettuce can only be considered as a ready to eat food.
