Nutrition and Food Sources

It is the correct answer. Milk not only contains proteins, fats, carbohydrates, but also vitamins A, B, D and minerals like calcium, phosphorus. So, it is a complete diet.

Lemon is rich in vitamin C. The deficiency of vitamin C causes 'bleeding gums'.

It is a noun which means 'a place, person, or thing from which something originates or can be obtained' and the sentence too needs a noun. It best explains the sentence.

Groundnut is richest in fats, carbohydrates and proteins.

Cow's milk is a common cause of food allergy in infants. Many affected children are able to tolerate dairy products later in life.

Soyabean is exceptionally rich in protein (~40% by weight), containing all essential amino acids, making it a complete protein source. This is why it's called the 'meat of the field' or 'poor man's meat'. While soy contains vitamins and minerals, its protein content is what distinguishes it from other plant sources.

Citrus fruits and amla having vitamin C will be highly recommended for bleeding and swollen gums.

Whole grains and pulses, potatoes, fresh fruits and vegetables are main sources of roughage. Roughage does not provide any nutrient to our body, but is an essential component of our food and adds to its bulk. This helps our body get rid of undigested food.

Orange is a rich source of vitamin C.

Soybean is indeed one of the richest plant sources of protein, containing about 36-40% protein by weight. It's a complete protein source with all essential amino acids, making it valuable for vegetarian diets.

Unripe fruits contain high concentrations of organic acids like citric acid (citrus), malic acid (apples), and oxalic acid. These acids decrease as fruits ripen and convert to sugars. Starch is converted to sugars during ripening, not acids.

Unripe fruits contain high concentrations of organic acids such as citric acid, malic acid, and oxalic acid. As fruits ripen, these acids are metabolized or converted to sugars, reducing the sour taste. This is why unripe fruits taste sharp or bitter while ripe ones taste sweet. Starch, carotenoids, and lipids don't produce this characteristic sour taste.

Cheese is the most nutritious among these options as it contains complete proteins, calcium, fats, and various vitamins. Bread provides mainly carbohydrates, sugar is empty calories, and coffee has minimal nutritional value.

The diet of student ‘A’ contains adequate amount of all the essential nutrients and is considered as a balanced diet.