Question

which element is an important component of macromolecules due to its ability to form up to four covalent bonds?
nitrogen
carbon
hydrogen
sodium

Explanation:

Carbon can form up to four covalent bonds. It is a key - element in macromolecules like carbohydrates, proteins, nucleic acids, and lipids because of this bonding ability. Nitrogen typically forms 3 covalent bonds, hydrogen forms 1, and sodium is an ion - forming metal and not a key covalent - bonding element in macromolecules.

Answer:

B. Carbon