C. Â 5/6 Â = Â 7/8 Â is an INCORRECT comparison.
Step-by-step explanation:
Here, the given comparisons are:
A. Â 1/4 Â < Â 1/3
Solving the fraction,we get:
1/4 = 0.25 and 1/3 = 0.333
Also, 0.25 < 0.33
⇒  1/4  <  1/3  is a CORRECT comparison.
B. Â 3/8 > 1/4
Solving the fraction,we get:
3/8 = 0.375 and 1/4 = 0.25
Also, 0.375 > 0.25
⇒  3/8 >  1/4  is a CORRECT comparison.
C. 5/6 Â = Â 7/8
Solving the fraction,we get:
5/6 = 0.833 and 7/8 = 0.875
Also,0.833 ≠0.875
⇒  5/6  =  7/8  is an INCORRECT comparison.
D. Â 1/3 Â < Â 2/5
Solving the fraction,we get:
1/3 = 0.333 and 2/5 = 0.4
Also,0.333 < 0.4
⇒  1/3  <  2/5  is a CORRECT comparison.