Correct option is A
Dialogue: Refers to a conversation or spoken exchange between people.
Bark: The sound made by a dog.
Bray: The sound made by a donkey.
Roar: The sound made by a lion or large cat.
Different Option (a) Dialogue is different because it refers to a form of communication (a conversation) rather than a sound made by an animal. The other three options (Bark, Bray, Roar) are all animal sounds.
Thus, the correct answer is: (a) Dialogue.