Respuesta :
Answer: Option (A) is correct.
Explanation:
There are two types of reactions, one is exothermic and another is endothermic.
On increasing the temperature in a reaction, the energy of molecules increases and hence there will be transfer of energy from molecules to the atmosphere.
On decreasing the temperature in a reaction, the molecules will absorb energy from the atmosphere.
Thus, it can be concluded that if the temperature changes in a chemical reaction, then energy was transferred.
