The smallest whole number that must be multiplied to 1083 to make it a perfect square, is:

Correct option is B

Given:
The number = 1083

To find: the smallest whole number that must be multiplied to 1083 to make it a perfect square.

Concept Used:
For a number to be a perfect square, all prime factors must appear in even times.

Solution:

Factorize: 1083 = 3$$\times$$​ 19 $$\times$$​19 

For 1083 to be a perfect square, we need to multiply by 3, as 3 appears with an odd times.

So, the smallest number to multiply is 3.