The correct option is C 7,988, 7,922, 7,568, 7,524
The digit at thousands place is 7 for all the four numbers so we should have a look at the digit at hundreds place.
7,568 and 7,524 have 5 in their hundreds place and 7,988 and 7,922 have 9.
Among 7,988 and 7,922, 7,988 has 8 in tens place and 7,922 has 2. So, the largest number here is 7,988 and 7,922 is the second largest.
Now for third place, we compare 7,568 and 7,524. In their tens places 7,568 has 6 and 7,524 has 2. So, 7,568 is larger than 7,524.
So, the descending order of numbers is as follows:
7,988 > 7,922 > 7,568 > 7,524.