Final answer:
One small trout for dietary purposes is typically considered to be equivalent to 3 ounces. This standard serving size is commonly used in nutrition guidelines and is comparable to the size of a deck of cards.
Step-by-step explanation:
The question about the equivalence of a small trout in ounce equivalents pertains to portion sizes and food measurements, which are essential to understand for proper nutrition and health. While the exact weight can depend on the type of trout and its size, for dietary purposes, a reference amount for one serving of cooked fish like trout would typically be 3 ounces. To relate this to the given list of food items, it's similar to the size of a deck of cards or the palm of your hand. This portion size is often used as a standard in dietary guidelines. When it comes to converting larger units to smaller units, you would multiply, as seen in the provided examples where converting from pounds to ounces involves multiplication because an ounce is smaller than a pound.