The Fibonacci sequence works like this. Take the first two generations, add them together and that gives you the third. Add the second and third to get the fourth. Add the fourth and fifth to get the sixth.
So you need to add the sixth and seventh to get the eighth.
13 + 21= 34
Add the seventh and eighth to get the ninth.
21 + 34= 55
Answer is C- 34, 55
