Fill in the blank (classical temperaments — meaning of “sanguine”) “A sanguine outlook is associated with the ______.” Choose the correct noun.

Given data

• Term: sanguine (cheerfully optimistic), from the ancient theory of humours.

Concept/Approach
In the four-humour theory: sanguine = blood, choleric = yellow bile, melancholic = black bile, phlegmatic = phlegm.

Option analysis
blood — correct association.bile / melancholy / phlegm — correspond to other temperaments (choleric, melancholic, phlegmatic).

Final Answer
blood