The correct option is D 5669
The whole numbers come between 5665 and 5670 are 5666, 5667, 5668, 5669.
By observing the numbers , we get to know that first three digits of all the numbers are same.
So, lets compare the fourth or the last digit.
Then its clear that 9 > 8 > 7 > 6.
Therefore 5669 is greater than all the other given numbers.