Final answer:
The correct serving size for pasta or noodles according to the information provided and the Canada Food Guide would be 1/2 cup or 125g. This is aligned with the indications that 200 kilocalories are contained in a 1/2 cup serving of grain products.
Step-by-step explanation:
When determining how much pasta or noodles is considered one serving, it is essential to refer to the Canada Food Guide (CFG) for guidance. Based on the information provided, we can see that serving sizes are crucial in understanding how much food to consume to attain the necessary nutrients without overeating. In the context of grains, which include pasta and noodles, the CFG suggests filling a quarter of your plate with grain products and making at least half of your daily grain intake comprised of whole grains. A specific serving size mentioned within your provided information states that there are 200 kilocalories in ½ cup of a food item, which could align with grain servings like pasta or noodles. If we apply this information broadly, option A) 1/2 cup, 125g would be the closest match to the serving size discussed. Hence, for grain products like pasta or noodles as per the CFG, the serving size would likely be ½ cup or 125g based on the information provided.