12/24=4x3/8x3
=4/8
4/8 is not correct ans it is less than 5/8
B) 3/4
multiply and divide it by 2 so the denominator should be equal to 8
3x2/4x2=6/8
6/8 is greater that 5/8 hence b is correct option
C)15/24=5/8 which is equalt to 5/8 hence it is not correct answer
D)4/12=1/3 it is also less than 5/8