To find the midnight temperature in Quebec City, we start with the temperature at 4 pm, which is 5 degrees Celsius. The temperature drops by 15 degrees by midnight:
\[ 5 - 15 = -10 \]
So, the temperature at midnight is -10 degrees Celsius.
Next, we need to determine where -10 degrees falls on the given number line which has the following points:
-20, blank, A, B, 0, 5, C, blank, D
Since -10 is less than 0 and greater than -20, it will be placed between -20 and 0. Specifically, it should be to the left of 0 and to the right of -20.
Now we need to see if it's possible to identify which specific point corresponds to -10. However, the points are not labeled with specific temperatures except for the endpoints (e.g., -20 and 0).
In this case, since -10 is between -20 and 0, we could conclude that:
- Point A, Point B, Point C, or Point D could represent the temperature -10, but we do not have enough information to specify which exact point it is.
Based on the question, we would need to select a point. Since the question does not specify any relationships between the points A, B, C, and D, and without additional context to determine their positions, we cannot definitively choose.
Provided your options lack context about the placement of A, B, C, and D, you may consider marking the point that aligns with -10 usually tends to be more central between the given range.
If we assume the points are evenly distributed and -10 is the most central value, you might choose:
Point C as a logical estimate for -10 degrees Celsius. But without more specific information about the layout, this is a guess based on the options provided.