The correct option is: b. -6
Explanation
He begins with the number 8.
After multiplying it by 5, he will get : [tex]8*5=40[/tex]
Then it is divided by -10, so he will get : [tex]\frac{40}{-10}=-4[/tex]
At last, he subtracts 2, so he will get : [tex]-4-2= -6[/tex]
So, the number he finds at the end of the game is: b. -6