Final answer:
To solve the congruence, we need to find a number that is congruent to the given number with respect to the modulus. The only option that satisfies the congruence is D) 24%
Step-by-step explanation:
To solve the congruence, we need to find a number that is congruent to the given number with respect to the modulus. Let's consider each option and check if it satisfies the congruence:
A) 21 mod N = 21, which is not equal to 12
B) 27 mod N = 27, which is not equal to 12
C) 18 mod N = 18, which is not equal to 12
D) 24 mod N = 12, which is equal to 12
Therefore, the solution is D) 24%