The unit that would be the best for measuring the amount of water in a bathtub would be up to the scale used. Out of the given choices, liters seems to be the best choice. So, the correct answer will be C.
As we know that An average bathtub contains 42 gallons which is equal to 159 liters so depending on how accurate we want our calculations we will use litres to measure the amount of water in the bathtub. I hope it helped.
