Observation, hypothesis, theory, or law?

Question

a. A system containing many particles will not go spontaneously from a disordered state to an ordered state.

b. Water evaporates from a puddle on a hot, sunny day faster than a cold, cloudy day.

c. In an ordinary physical or chemical change, mass cannot be created or destroyed.

d. If a cat fights with a dog, then the cat will get fleas.

Answer 1

a) theory

b) observation

c) law

d) hypothesis