Final answer:
The frog will succumb to gradual temperature increase and not realize the danger until it is too late if it is put in cool water that is then slowly brought to a boil.
Step-by-step explanation:
The phenomenon being described in the student's question illustrates how a frog reacts to sudden versus gradual changes in temperature. If a frog is placed in boiling water, it will jump out immediately. However, if the frog is put in cool water that is slowly heated to boiling, the frog will succumb to gradual temperature increase and potentially not realize the danger until it is too late, which leads to an unfortunate outcome. This does not involve metamorphosis (transformation from a tadpole to an adult frog), hibernation (state of inactivity and metabolic depression in cold temperatures), or adaptation to the temperature changes in a way that ensures survival.