https://whatsapp.com/channel/0029Va81q0TLtOj8Und0ua0l/5296 Option (A) is correct. *Explanation:* `Wistful describes a feeling or expression of mild or vague regret, longing, or nostalgia.` *Examples:* 1. "She had a wistful look on her face as she reminisced about her childhood." 2. "The wistful melody evoked memories of summers past." > In both examples, "wistful" highlights a sense of melancholic or nostalgic longing