Answer:
increase her arousal to an optimum level.
Step-by-step explanation:
In psychology, the "Yerkes Dodson law" argued about the optimal level of arousal. The theory states that the arousal and the performance of an individual are being related directly. It says that the increase in the level of the arousal to some extent or certain level helps to boost or increase an individual's performance. Therefore, if the level of an individual's arousal over-passes the optimal level the performance of the person starts to decrease or diminish.
In the question above, the given statement states that Alma is motivated to escape the playpen to increase her arousal to an optimum level.