Answer:
Complete the code using:
  for (i = 0; i <SCORES_SIZE-1; i++) {
    bonus_Scores[i] = bonus_Scores[i] + bonus_Scores[i+1];
  }
Explanation:
This iterates through all elements of the list except the last
  for (i = 0; i <SCORES_SIZE-1; i++) {
This adds the current element to the next, the result is saved in the current list element
    bonus_Scores[i] = bonus_Scores[i] + bonus_Scores[i+1];
  }
See attachment for complete code