Carbon dioxide (CO₂) is formed when one carbon atom bonds with two oxygen atoms. The type of bond formed between carbon and oxygen in CO₂ is a covalent bond. Specifically, carbon forms two double covalent bonds with two oxygen atoms.
Given these points, the correct response would be four covalent bonds.
This is because each double bond consists of two shared pairs of electrons—one for each bond—so 2 double bonds account for a total of 4 covalent bonds. However, since the options provided are a bit misleading as usually we consider the bonds to be counted as double bonds rather than covalent pairs.
Thus, the best possible choice from the options given that reflects how bonds are typically quantified in CO₂ formation, is four covalent bonds.