What mood does the term "morose" convey?

The term "morose" conveys a mood characterized by a brooding ill humor, indicating a state of deep sadness or gloominess. This word is often used to describe someone who appears sullen, emotionally withdrawn, or generally unhappy. The feelings associated with being morose suggest a lack of joy or enthusiasm, embodying a heavy, dark emotional tone that is the opposite of cheerful or lighthearted moods. Therefore, the interpretation of "morose" as showing a brooding ill humor accurately captures its essence, making it the appropriate choice.

The other options describe positive or lively emotions that are incongruent with the meaning of "morose." While 'cheerful and happy' and 'optimistic and hopeful' represent bright, uplifting feelings, 'active and lively' suggests energy and vivacity, which are also contrary to the somber nature of someone who is morose.