Final answer:
The best definition for the word 'ecstasy' in the passage is 'joy'. Among the seven universal emotions described, 'melancholy' is not one of them; the universal emotions include happiness, sadness, fear, disgust, anger, surprise, and contempt.
Step-by-step explanation:
The question you've asked appears to be related to understanding emotions, as specified in a chapter you are studying. The word 'ecstasy' in the given passage would be best defined as joy, which is synonymous with an intense state of happiness or overwhelming emotion. Among the options provided - confusion, joy, contentment, and fear - joy is the correct synonym for ecstasy in most contexts.
Regarding the other portion of the question concerning the seven universal emotions described in your chapter, these emotions are widely recognized in psychological studies. The universal emotions typically mentioned are happiness, sadness, fear, disgust, anger, surprise, and contempt.
With this in mind, the answer to which of the listed emotions is not one of the seven universal emotions would be C. melancholy. Melancholy is a form of sadness or depression and is not considered one of the core universal emotions.