function makeStudentsReport(data) {
  const results = []; // this makes an empty array
  for (let i = 0; i < data.length; i++) { //the loop which loops over each item in the array
    const item = data[i];//declared variable item to the item in array.
    results.push(`${item.name}: ${item.grade}`);//this adds each item to the end of the empty array that we created.
  }
  return results;
}