Final answer:
The average temperature during an Alaskan winter evening is -14°C, which is obtained by subtracting 24°C from the average summer temperature of 10°C.
Step-by-step explanation:
The question asks us to calculate the average temperature during an Alaskan winter evening, given that the average temperature during an Alaskan summer day is 10°C, and that the average temperature during a winter evening is 24°C less than a summer day. To find the winter evening temperature, we subtract 24°C from the summer day average of 10°C.
10°C - 24°C = -14°C
Therefore, the average temperature during an Alaskan winter evening would be -14°C, which corresponds to option (a).