its 4 because each space is 25% no matter how big or small it is. so if you land on -9 to -5 thats 25% and to -2 thats another 25% total 50% its asking for 75% so you go one more which lands on 4 making it 75%
assuming the three options are no solutions, one solution and all real numbers, i would say the final option. i forgot what the proper wording is thoough