Answer
(4) C₃H₈
Step-by-step explanation
Saturated hydrocarbons are hydrocarbons that contain only single bonds between carbon atoms. As a result, each carbon atom is bonded to as many hydrogen atoms as possible. Saturated hydrocarbons are given the general name of alkanes. The general formula for a straight-chain saturated hydrocarbon is CnH2n+2 where n is the number of carbon.
When n = 2
C2H(2 x 2) + 2 = C2H6
When n = 3
C3H(2 x 3) + 2 = C₃H₈
Hence, the formula that represents a saturated hydrocarbon in the options is:
(4) C₃H₈