Final answer:
According to Galen, the choleric person is one who is passionate, ambitious, and bold, which is associated with the yellow bile humor.
Step-by-step explanation:
According to Galen, the choleric person is passionate, ambitious, and bold. This personality type is one of the four temperaments derived from ancient medical theory established by Hippocrates and expanded upon by Galen. The temperaments are connected to four bodily fluids, or "humors," with choleric temperament being related to yellow bile from the liver. The choleric individual tends to exhibit characteristics such as leadership and determination, as opposed to the melancholic individual, who is often seen as reserved and anxious. This personality categorization suggests that people can be sorted into distinct groups based on these temperament types. The correct answer to the student's question is option a. choleric.