Carbon can only bond with other carbon atoms. Carbon is a solvent that breaks chemical bonds. Carbon readily forms ionic bonds that separate easily. Carbon can form many types of molecules with covalent bonds.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which of the following is a central role of carbon in the chemistry of living organisms?
Possibilities:
- Carbon can only bond with other carbon atoms.
- Carbon is a solvent that breaks chemical bonds.
- Carbon readily forms ionic bonds that separate easily.
- Carbon can form many types of molecules with covalent bonds.

Carbon can form many types of molecules with covalent bonds.