Vitamins and Nutrition

Bananas contain Vitamin C (approximately 8-10 mg per medium banana), though they're more famous for potassium. While not their primary nutrient, bananas do provide Vitamin C, unlike B9, B12, or D which are minimal or absent in significant amounts.

Kiwi fruits contain Vitamin A, though in smaller amounts compared to their exceptional Vitamin C content. While kiwis are not a primary Vitamin A source like carrots or liver, they do provide this fat-soluble vitamin that supports vision and immune function.

Lemons are excellent sources of Vitamin C, with one lemon providing about 53 mg (over half the daily requirement). As a citrus fruit, lemons are renowned for their Vitamin C content, unlike Vitamins K, B12, or D which are minimal in lemons.

Mangoes are not significant sources of Vitamin K; they're primarily known for Vitamins A and C. While some fruits contain Vitamin K (like berries or kiwi), mangoes provide minimal amounts, making the statement false.

Strawberries are rich in Vitamin C, with one cup providing about 89 mg (more than an orange). The bright red berries are an excellent Vitamin C source, supporting immune function and collagen production, making the statement true.

Cherries contain Vitamin C, though in moderate amounts (about 10 mg per cup). While not as concentrated as citrus or strawberries, cherries do provide Vitamin C, unlike B12, B3, or D which are minimal in cherries. Their main benefits are antioxidants and anti-inflammatory compounds.

Vitamin K is essential for blood clotting as it helps synthesize clotting factors II, VII, IX, and X in the liver. Without adequate Vitamin K, blood cannot clot properly, leading to excessive bleeding. The B vitamins and D have other primary functions.

Avocados are pear-shaped tropical fruits known for their exceptional nutritional profile for skin health. They are rich in vitamins A, B-complex (especially B5, B6, and folate), and vitamin E. This makes them highly valued in skincare products for their moisturizing, antioxidant, and nourishing properties. While pears are also pear-shaped, they don't match the nutritional profile described.

Bananas belong to the Family Musaceae and are an excellent source of potassium, Vitamin A, and Vitamin C. Doctors often recommend bananas to patients with low potassium levels because they help restore electrolyte balance. Strawberries, pears, and apples belong to different plant families (Rosaceae).

Potatoes are indeed a good source of vitamin C. A medium potato with skin provides about 45% of the daily recommended value of vitamin C, along with potassium, vitamin B6, and fiber. This makes potatoes nutritionally valuable beyond just being a starch source.

Vitamin D and calcium are both essential for bone health, but note the terminology issue in the question - calcium is a mineral, not a vitamin. Vitamin D helps the body absorb calcium from food, and both work together to maintain strong bones. A deficiency in either leads to bone problems like osteoporosis. Despite the minor classification error in calling calcium a 'vitamin', option C correctly identifies both nutrients as crucial for bone health.

Vitamin K is essential for blood clotting as it helps produce clotting factors in the liver. Vitamins B1 (thiamine), B2 (riboflavin), and D are unrelated to coagulation - B vitamins aid metabolism, D regulates calcium.

Vitamin K is essential for blood clotting as it helps produce several proteins required for the coagulation process. These proteins are synthesized in the liver and are crucial for forming blood clots to stop bleeding. Without Vitamin K, the blood would not clot properly, leading to excessive bleeding.

Vitamin K is essential for the post-translational modification of certain proteins required for blood coagulation. It acts as a cofactor for the enzyme gamma-glutamyl carboxylase, which converts specific glutamate residues to gamma-carboxyglutamate, enabling clotting factors to bind calcium.

Oranges are an excellent source of Vitamin C, which is essential for immune function and skin health. One medium orange can provide over 100% of the daily recommended Vitamin C intake. Vitamin A is found in carrots, Vitamin D in fortified dairy, and Vitamin B in whole grains.