function ListItem(props) {
  // Correct! There is no need to specify the key here:  return 
{props.value}
;}

function NumberList(props) {
  const numbers = props.numbers;
  const listItems = numbers.map((number) =>
    // Correct! Key should be specified inside the array.      );
  return (
    

      {listItems}
    
  );
}

const numbers = [1, 2, 3, 4, 5];
ReactDOM.render(
  ,
  document.getElementById('root')
);