Saturated hydrocarbons are organic compounds composed solely of carbon (C) and hydrogen (H) atoms.
The defining characteristic of saturated hydrocarbons, also known as alkanes, is that all carbon-carbon bonds within the molecule are single bonds. Each carbon atom forms four single covalent bonds, achieving stability by satisfying the octet rule.
Double bonds (C=C) and triple bonds (C≡C) are present in unsaturated hydrocarbons (alkenes and alkynes, respectively).
Therefore, the type of bond present exclusively between carbon atoms in saturated hydrocarbons is a single bond.