To solve this question, the user needs to know the concept of the modulus operator (%) and basic arithmetic.
Explanation:
The modulus operator (%) returns the remainder when the left operand is divided by the right operand.
When the expression ${12 % 4} is evaluated, it is equivalent to the expression 12 divided by 4, with the remainder returned as the result. Since 12 is evenly divisible by 4, the remainder is 0.