a) -5/-6
b) 5/-6
c) -5/6
d) 4/-6
From the format of -4/9 and -7/8 you can deduct that it is either A or C, -5/-6 (a) will be a positive decimal so therefore the answer is C because it is the only fraction in the correct format that has an answer on between the two in the problem.
C.) -5/6