The way you worded the question kind of confuses me but i'll try to answer.
Think of recursion like climbing a ladder; in this type of sequence you start out somewhere, usually n. So in f(n-1)+1, you take n (where you started) and "step down" once, and then step up once (which brings you back where you were). Remember PEMDAS when doing these.
Step-by-step explanation:
Option C is the correct one.
I hope it is helpful.Give brainliest answer if u satisfied with my answer.
The answer for 6 is -6,1/6
8/9 - 1/3 =
8/9 - 3/9 = 5/9