Asaturated fatty acid has a. one double bond within the hydrocarbon chain b. two double bonds within the hydrocarbon chain c. no double bonds within the hydrocarbon chain d. none of the above are correct

The correct option is: c. no double bonds within the hydrocarbon chain

Explanation:

Fatty acids are the simple lipid molecules, that are insoluble in polar solvents. These are 4-28 carbon long carbohydrate chains with a terminal carboxyl functional group.

The two types of fatty acids are: Saturated fatty acids and Unsaturated fatty acids

Saturated fatty acids contains hydrocarbon chain that has zero or no carbon- carbon double bond (C=C bond).

Whereas, the hydrocarbon carbon of unsaturated fatty acids has one or more than one carbon- carbon double bond (C=C bond).

it's c. elements are placed in rows based on how may valencies electrons have.