Final answer:
Saturated fatty acids are fatty acid chains with maximum hydrogen atoms and single covalent bonds. They are straight and rigid, and examples include stearic acid and fat in butter and lard.
Step-by-step explanation:
Saturated fatty acids are fatty acid chains that contain the maximum number of hydrogen atoms and have single covalent bonds between carbon atoms in the chain. This means that all available bonding sites on the carbon chain are occupied by hydrogen atoms, resulting in a straight and rigid structure. Examples of saturated fatty acids include stearic acid, found in butter and lard, and the fat found in steak or in our own bodies