Why is this the answer?

The answer is remark because this clever riddle plays a fun trick with the different ways we use words every day. A "remark" is just another way to say a comment or something that someone says out loud. Think of it like a quick thought you share with a friend, or a teacher sharing a helpful note about your schoolwork. This simple word perfectly matches all three parts of the puzzle, but you have to think carefully about the clues. First, the riddle asks, "What can be heard?". When you speak a remark, the sound travels through the air, and someone listening can definitely hear it with their ears. If you say to someone, "I hope you have a great day," that whole sentence is a remark, and it is easily heard by the other person. The sound is what allows us to share our thoughts with each other. So, the first clue is solved easily because all remarks are spoken words. Next, the riddle asks what can be "caught." This is the trickiest clue because you cannot catch a spoken word with your hands like you would catch a baseball. In this riddle, "caught" means to understand, notice, or remember something that was said. Imagine a friend tells you a secret or a funny story. When you understand what they said and hold the meaning in your memory, you have "caught" their remark. You might even catch a surprising or important remark and keep thinking about it all day long. This idea of mentally holding onto a message or an idea is what the riddle means by being "caught." It is a special way of catching things with your brain instead of your hands. Finally, the riddle says this thing is "never seen." This clue is also a perfect fit! A remark is not a physical object like a chair, a dog, or a piece of fruit. You cannot touch it or see it. It is just an idea or a thought shared through sound waves. You can see the person who makes the remark, and you might even see their mouth move, but the actual remark itself—the message they share—is invisible. It is only something you hear and then think about. That is why "remark" is the perfect answer, showing how tricky words can be when they are used in a clever riddle!