What is the smallest number which can be added to 9454351626 so that it becomes divisible by 11 ?

The number is 9454351626.

A number is divisible by 11 if the difference between the sum of its digits at odd places, and the sum of its digits at even places is divisible by 11.

Checking from option; 

From option (b)
∴ 9454351626 + 6 = 9454351632 

|9 + 5 + 3 + 1 + 3| - |4 + 4 + 5 + 6 + 2| 

21 - 21 = 0,

which means after adding the smallest number 6 in 9454351626 ,

the number we get is 9454351632 which is divisible by 11.