what is the best food for toddlers of age 2 ,years for their brain development

A. dear parent, for brain development of 2 years old toddler, give a balanced diet having variety of food groups at least 2 servings of good protein like pulses, beans, egg, soya , milk and Milk products, fish ,chicken, meat variety of seasonal fruits and vegetables and green leafy vegetables, especially vitamin A containing yellow, orange, green fruits and vegetables good fats providing Omega 3 for brain : Nuts like walnut, almond ,dry fruits, peanuts, flaxseed, lobia, fish.