Adding hydrogen atoms to an unsaturated fatty acid will make it
a. more solid
b. have better 6 benefits in relationship to heart disease
c. increase its flavor
d. create a fatty acid

The answer is (a.) more solid

Adding hydrogen atoms to an unsaturated fatty acid will make it more solid. This process is called hydrogenation. In this process, hydrogen is added to an unsaturated fatty acid to make it more saturated and thereby more solid at a room temperature.

d.) the average kinetic energy of the gas particles is greater in container b because its particles move faster.