Which type of fatty acids contain an equal number of hydrogen atoms to carbon atoms?

The correct answer is saturated fatty acids. Saturated fatty acids are characterized by having all available carbon atoms fully bonded to hydrogen atoms, which means there are no double bonds between the carbon atoms. This structure allows saturated fatty acids to have the maximum number of hydrogen atoms possible for their carbon chain length, resulting in a straight structure that can pack tightly together.

Unsaturated fatty acids, on the other hand, contain one or more double bonds between carbon atoms, which introduces fewer hydrogen atoms than carbon atoms in the chain. Trans fats specifically refer to a type of unsaturated fat that has been hydrogenated (partially saturated) and has a peculiar arrangement of hydrogen atoms but still does not have the same structure as saturated fatty acids. Triglycerides are a type of fat made up of three fatty acids and glycerol, so they do not fit the criteria of having a simple hydrogen to carbon relationship on their own.

In summary, saturated fatty acids contain an equal number of hydrogen atoms to carbon atoms, as they possess no double bonds that would limit the number of hydrogens attached to each carbon.