Answer: The coins with the highest volume on Polygon are Ethereum (ETH), Wrapped Bitcoin (WBTC), Tether (USDT), Aave (AAVE), and Uniswap (UNI). These coins are some of the most popular and widely used on the Polygon network, and their high trading volume indicates that they are popular among traders. As such, these coins may be a good choice for those looking to invest in the Polygon network. However, it is important to do your own research and make sure that any coins you invest in are right for you and your investment goals.