The protein source that provides the highest protein per 100 g among common foods is which?

• A. Chicken breast
• B. Beef sirloin
• C. Salmon
• D. Tofu

Answer: (B)

Protein per 100 g reflects how protein-dense a food is—the amount of protein relative to the weight. Foods with less water and fat and more lean protein give you more protein per 100 g. Lean chicken breast is among the most protein-dense common foods, typically around 30 g or more of protein per 100 g when cooked. Beef sirloin also has a high protein content, usually in the mid-20s per 100 g cooked, but slightly less than chicken breast. Salmon often lands in the same range as beef, a bit lower than chicken in many cases, while tofu provides considerably less protein per 100 g (around 8–10 g, depending on firmness). So, among these options, chicken breast delivers the highest protein per 100 g.