Which element, represented by its symbol on the periodic table, is essential for providing strength to bones?

• A. Nitrogen (N)
• B. Sulfur (S)
• C. Phosphorus (P)
• D. Hydrogen (H)

Answer: (C)

Verified step by step guidance

1. Understand that the question asks which element is essential for providing strength to bones, focusing on elements commonly found in biological systems.
2. Recall that bones are primarily composed of a mineral called hydroxyapatite, which contains calcium and phosphate ions.
3. Recognize that phosphorus (P) is a key component of phosphate groups, which combine with calcium to form the mineral matrix that gives bones their strength and rigidity.
4. Note that nitrogen (N), sulfur (S), and hydrogen (H) are important in biological molecules but do not directly contribute to the mineral strength of bones.
5. Conclude that phosphorus (P) is the element essential for providing strength to bones due to its role in forming phosphate compounds in the bone structure.