https://whatsapp.com/channel/0029Va81q0TLtOj8Und0ua0l/5247 Option (A) is correct. *Explanation:* `Nostalgia is a bittersweet sentimentality for a past time, place, or experience.` > It's often triggered by memories, objects, or sensory cues that transport us back to a bygone era. *Examples:* 1. "The old photographs filled him with nostalgia for his college days." 2. "Listening to her favorite childhood songs brought back nostalgic memories of family road trips."