Answer:
An apple
Step-by-step explanation:
"An apple a day keeps the doctor away" is a popular English expression of long tradition. More than being a literal norm, it intends to promote healthy eating as a preventive mechanism to avoid disease.
An apple is a fresh fruit that provides the human body potassium, dietary fiber, vitamin A, vitamin C, sugar, protein, calcium and iron. These nutrients translate into health benefits and contribute to maintaining a health.