Final answer:
For small portions like 'Fresh Milk w Herbal Jelly', milliliters (ml) is the appropriate unit of measure, while large-scale milk production such as that from a dairy farm would be measured in gallons.
Step-by-step explanation:
When considering the appropriate unit of measure for various quantities of milk, one should keep in mind the capacity it represents. For smaller quantities, like the milk in a baby bottle, fluid ounces would be the most suitable. In larger dairy operations such as that run by Megan, where the daily production from 85 cows is significant, gallons would be a more fitting unit.
The volume of everyday items, like a jug of milk which holds a similar capacity to a bottle of soda, would typically be measured in liters. However, when we are discussing the options provided—200ml, 300ml, 400ml, and 500ml—these are subunits of liters and are perfectly adequate for measuring smaller amounts such as a serving of Fresh Milk with Herbal Jelly. Therefore, the appropriate unit of measurement for this scenario would be in milliliters (ml).