Your answer is the last option, -148°F
The formula to convert temperatures from Celcius to Farenheit is:
(C° x 9/5) + 32 or (C° x 1.8) + 32
So to solve, plug in -100°C and follow the order of operations (PEMDAS).
(-100 x 1.8) + 32
(-180) + 32
-148
-100°C is equal to -148°F