Final answer:
A) 1 cup, 250mL
The CFG serving size equivalent for kefir is 1 cup or 250mL, aligning with other liquid dairy servings such as milk.
Step-by-step explanation:
The Canadian Food Guide (CFG) Servings reference for Milk and Alternatives provides a guideline on the standard serving sizes for various dairy and dairy alternative products.
When considering kefir, which is a fermented milk drink, it's important to align it with similar liquid dairy servings. Based on the information provided, a serving size for milk is 1 cup (250mL).
Therefore, extrapolating this to kefir, the equivalent serving would also be 1 cup, 250mL (Answer A).