Final answer:
To determine the range of temperatures from a temperature of 8 degrees below zero that rose to 35 degrees, you add the absolute value of the lower temperature to the higher, resulting in a range of 43 degrees (Option a).
Step-by-step explanation:
The question asks for the range of the temperatures between 6 am and 10 am. The temperature at 6 am was 8 degrees below zero and rose to 35 degrees by 10 am. To find the range, subtract the lower temperature from the higher temperature, in this case:
35 degrees - (-8 degrees) = 35 degrees + 8 degrees = 43 degrees.
Thus, the correct answer is (a) 43 degrees.