Why is this the answer?

The answer is tongue because this fun riddle is actually talking about a super important part of your body that you use every single day. Let's look at the clues one by one to see how they fit! First, the riddle says: "Often held but never touched." Your tongue is a muscle, and it lives right inside your mouth, which keeps it safely "held" right where it belongs. Your mouth is like a cozy little house for your tongue. Most people do not use their hands to touch their tongue on purpose. It stays held in its special place by the muscles and bones in your jaw and neck all the time. That is a clever way to describe something that is always with you but rarely needs to be held by your hands! Next, we have the clue: "Always wet but never rusts." Your tongue is constantly covered in saliva, which is the clear, watery liquid we call spit. This keeps your tongue always wet! Now, we know that only things made out of metal, like an old bicycle or a fence, can get wet and then "rust" and turn orange. But your tongue is made of muscle, not iron, so it will never turn rusty, even though it is always wet. That is a very tricky and smart clue! The third line is: "Often bits but seldom bit." The word "bit" here is tricky! When you talk, your tongue works very hard to help you make little "bits" of sound that become words and sentences. So, the tongue is often used to say those bits of words. If you are eating or talking really fast, you might accidentally bite your tongue. Ouch! That painful mistake happens, but it is "seldom bit," which means it does not happen often, thank goodness! The last line of the riddle is: "To use it well you must have wit." "Wit" is an old but fun word that means being smart or having good sense. Your tongue is only a tool that you use to speak, but you need your brain to decide what words to say and how to say them nicely and clearly. If you want to use your tongue to share super smart ideas, tell funny jokes, or ask important questions, you definitely have to use your wit, or your intelligence, before you speak. This riddle is a wonderfully smart puzzle that describes the incredible job your tongue does every minute of the day, helping you eat delicious food, taste new flavors, and talk with all of your friends!