Answer:
a)heat is removed
Step-by-step explanation:
Entropy is the a stare of randomness or disorderliness of the particles of a system.
The entropic level of a system depends on temperature and physical state of matter.
With increasing temperature, the randomness of the particles of a system increases. When heat is removed from a system, the entropy reduces and orderliness is approached. For example, the entropy of steam would decrease if we place it in a refrigerator. In the refrigerator, work is done on the steam to remove the heat and reduce the temperature. The vapour moves from gas to liquid and then to a more ordered ice.
When disorder increases, entropy increases also.
When we add more energy to a system, it causes a rise in randomness.