Answer: First an endothermic and then followed by the exothermic process
Explanation:
Based on the information given in the question, we should note that the entire process is an endothermic process at first and then an exothermic process.
We should note that heat is absorbed during an endothermic process and the environment is cooled but for an exothermic process, heat is being released which leads to the increase in the temperature of the surroundings.