The correct answer is option 4: "An optimal quantity of fat, protein, carbohydrate with adequate amount of water and fiber makes a healthy diet."

Let`s look at each option to better understand why option 4 is the correct answer:

Option 1 states that regular eating of high-energy snacks between meals is healthy because it provides energy and vitamins in plenty. While snacks can provide energy, relying on high-energy snacks between meals can lead to consuming excess calories and may not provide a balanced intake of nutrients. Additionally, consuming excessive snacks high in sugar and unhealthy fats can lead to weight gain and other health problems.

Option 2 states that fruits and vegetables make a good choice because their energy content is high. While fruits and vegetables are nutritious and can provide some energy, they are not primarily chosen for their high energy content. They are typically low in calories but rich in vitamins, minerals, and fiber, making them an essential part of a healthy diet.

Option 3 states that a balanced diet must contain plenty of fat and protein with little carbohydrates and fiber. This statement is incorrect as a balanced diet should include a combination of carbohydrates, fats, and proteins in appropriate proportions. Additionally, fiber is an essential component of a healthy diet and aids in digestion and maintaining stable blood sugar levels