Answer:
Drive reduction theory.
Step-by-step explanation:
According to the Drive reduction theory of motivation, when an individual is experiencing a need of psychological or physiological origin, is followed by a drive (motivation) to satisfy, or in other words, reduce this need. If the drive is not satisfied, it becomes more intensive with time up to the point that an individual will do everything to satisfy the drive.
Here, Jill experienced the drive to satisfy (reduce) her physiological need to drink water while playing. Meanwhile, it was not too strong. She kept playing but the need to satisfy her thirst became so strong (intensified) that she decided to stop playing.