Cassandra is a very picky eater. She mostly eats cheese sandwiches and refuses to eat any vegetables or fruits. She has been getting sick a lot lately, and the doctor told her that her immune system is not functioning properly. Her poor immune system is MOST likely due to a deficiency in which type of nutrient?
Cassandra's poor immune system is most likely due to a deficiency in vitamins and minerals found in vegetables and fruits, such as vitamin C, vitamin A, and potassium.
