Which of the following is listed as a sign of malnutrition?

• A. Pain in calves/muscles
• B. Clear skin
• C. Improved mood
• D. Strong nails

Answer: (A)

When nutrition is lacking, the body’s tissues and muscles don’t get what they need to work smoothly, so uncomfortable symptoms in muscles can appear. Pain or aches in the calves or other muscles can arise from muscle wasting and electrolyte imbalances that come with inadequate intake of protein, minerals, and fluids. This makes muscle function feel tender or sore, especially with activity, and can be an early hint that nutrition isn’t meeting the body’s needs.

The other options describe states that are typically associated with good nutrition or general health rather than malnutrition. Clear skin, improved mood, and strong nails usually indicate adequate or improving nutrient status rather than a sign of undernutrition.

So, muscle pain is the most plausible sign among the choices that links to nutritional problems affecting how the muscles function.