Question

question 11
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if someone is experiencing brittle nails and hair, its possible they are experiencing a
______ toxicity.

mineral

vitamins

protein

water

Explanation:

Brittle nails and hair can be a sign of vitamin toxicity (e.g., excessive vitamin A or biotin - related issues in some cases, or deficiency - related brittleness that can also relate to imbalance/toxicity in vitamin metabolism). Mineral toxicity (e.g., iron overload) has different symptoms, protein deficiency/toxicity doesn't typically cause brittle nails/hair as a primary sign, and water toxicity (hyponatremia - related) has symptoms like nausea, headache, not brittle nails/hair. So vitamins is the most appropriate option.

Answer:

B. vitamins