Final answer:
1.50 gallons is equivalent to approximately 5.685 liters; however, based on the provided choices and rounding to the nearest three significant figures, the closest correct answer is 5.678 liters, option b).
Step-by-step explanation:
To convert gallons to liters, as in the problem "How many liters are in 1.50 gallons?", we use the conversion factor that 1 gallon is approximately 3.79 liters. By multiplying 1.50 by 3.79, we get 5.685 liters.
However, the options given seem to use a rounded conversion factor of 3.75 liters per gallon, so if we multiply 1.50 by 3.75, we get 5.625 liters, which suggests a rounding off could be in play. Therefore, the closest correct answer from the choices given, rounding to three significant figures, would be 5.678 liters, option b).