Correct option is B
The four humours were a theory of physiology and personality that was popular in ancient and medieval medicine. The theory held that the four humors—blood, yellow bile, phlegm, and black bile—were responsible for both physical and mental health.
• Blood was associated with the sanguine temperament, which was characterized by cheerfulness, optimism, and an active lifestyle.
• Yellow bile was associated with the choleric temperament, which was characterized by anger, ambition, and a competitive spirit.
• Phlegm was associated with the phlegmatic temperament, which was characterized by calmness, slowness, and a thoughtful disposition.
• Black bile was associated with the melancholic temperament, which was characterized by sadness, seriousness, and a contemplative nature.
The theory of the four humours was based on the belief that the human body was made up of four elements: air, fire, water, and earth. Blood was associated with air, yellow bile with fire, phlegm with water, and black bile with earth. The humoral theory was used to explain a wide range of phenomena, from physical illness to mental disorders. For example, if someone was feeling angry, it was thought to be because they had an excess of yellow bile. If someone was feeling sad, it was thought to be because they had an excess of black bile. The humoral theory was eventually discredited by scientific advances, but it remains an important part of the history of medicine and psychology. It is important to note that the humoral theory is no longer considered to be scientifically accurate. However, it is still an interesting and important part of the history of medicine and psychology.