Which of the following foods has the least amount of protein per serving?

The peach contains the least amount of protein per serving among the given options. Fruits, including peaches, typically consist of higher water content and carbohydrates, mostly in the form of natural sugars, which results in significantly lower protein levels. In contrast, foods like milk, lamb, and eggs are rich in protein, widely recognized as excellent sources due to their content of essential amino acids.

Milk provides a moderate amount of protein, while lamb is a substantial source because it is a type of meat rich in various nutrients, including proteins. Eggs also deliver a high amount of protein per serving, considered a complete protein source, which makes them ideal for those looking to increase their protein intake. Thus, compared to these protein-dense foods, the peach stands out as having minimal protein content.