Certainly! Let's break down the situation step by step.
1. Understanding the initial condition:
- The original temperature at midnight is [tex]\(12^{\circ}C\)[/tex].
2. Understanding the change in temperature:
- From midnight to [tex]\(6:00\)[/tex] AM, the temperature decreases by [tex]\(12^{\circ}C\)[/tex].
3. Representing the decrease in temperature:
- Temperature decrease is a subtraction operation, so we need to subtract [tex]\(12^{\circ}C\)[/tex] from the initial temperature.
4. Setting up the expression:
- To find the temperature at [tex]\(6:00\)[/tex] AM, we subtract the decrease from the original temperature:
[tex]\[
12 - 12
\][/tex]
5. Evaluating the expression:
- The expression [tex]\(12 - 12\)[/tex] represents the temperature at [tex]\(6:00\)[/tex] AM after the decrease:
[tex]\[
12 - 12 = 0
\][/tex]
Therefore, the correct expression that represents the situation is:
[tex]\[
\boxed{12 - 12}
\][/tex]
Hence, the correct answer is:
[tex]\[
\text{A. } 12 - 12
\][/tex]
