Answer:
1/8
Explanation:
The probability of getting a yellow can be found by dividing the number of yellow sections by the total number of sections. 
P(yellow)= yellow/total 
There is only 1 yellow section out of a total of 8 sections. 
yellow= 1
total= 8 
P(yellow)= 1/8 
This fraction cannot be reduced further, so our answer is 1/8.