The correct option is D 6
Divisibility by 9
The sum of digits of 618 is 15 which is not divisible by 9. Therefore, 618 is not divisible by 9.
Divisibility by 5
The number 618 doesn't end with either 0 or 5. Therefore, it is not divisible by 5.
Divisibility by 10
The number 618 doesn't end with 0. Therefore, it is not divisible by 10.
Divisibility by 6
The number 618 is divisible by both 2 and 3 because it is an even number and sum of its digits is 15 which is divisible by 3. Therefore, 618 is divisible by 6.