We should eat a balanced diet because it contains all the components of food in the right proportions.
Statement is correct, but reason is incorrect
A diet that consists of the right amount of essential nutrients required by the body, viz. carbohydrates, proteins, fats, vitamins, minerals, roughage and water, is called a balanced diet. In a balanced diet, food items are classified into five food groups based on their nutrient composition. These are milk and cheese group, pulses and meat group, vegetables and fruits group, fats and oils group and grains group. By taking proper amounts of food from each group, the body gets all the nutrients needed for its proper growth and functioning.