Final answer:
The largest unit of measure among deciliter, decaliter, milliliter, and hectoliter is the d. hectoliter, which is equal to 100 liters.
Step-by-step explanation:
The unit of measure that is the largest among the ones listed is hectoliter.
To compare the units, let's define each abbreviation in terms of the base unit of volume, the liter (L). A milliliter (mL) is 1/1,000th of a liter, a centiliter (cL) is 1/100th of a liter, a deciliter (dL) is 1/10th of a liter, a decaliter (daL) is 10 liters, and a hectoliter (hL) is 100 liters. Therefore, when comparing mL, cL, dL, daL, and hL, the hectoliter is the largest unit because it represents a greater volume of liquid.
Additionally, it's important to consider what you are measuring to select the appropriate unit. A milliliter would be used for very small amounts of liquid, whereas a hectoliter would be used for much larger volumes.