An unsaturated fatty acid must contain a double bond in the poly carbon chain other than the double bond in the functional group. In these two, images there exists a double bond in the carboxylic group i.e –COOH.
Since none of them have double bond in long poly carbon chain, therefore these two fatty acids cannot be considered as unsaturated fatty acid.
Intermolecular forces. Water is a dipole and acts like a magnet, with the oxygen end having a negative charge and the hydrogen end having a positive charge. These charged ends can attract other water molecules.
