Answer: Option 'B' is correct.
Explanation:
Since we have given that
Part of meal ate by James =

Part of meal ate by Josephine =

We want to compare both the meals.
For which we need to make the denominator same by taking L.C.M.
L.C.M. of 8 and 7 = 56
So, Part of meal eaten by James becomes

Similarly,
Part of meal eaten by Josephine becomes

So, Josephine eats greater part of meal than Jame eats.
Difference between their parts would be

Hence, Josephine ate
more of her meal than James ate.
Thus, option 'b' is correct.