Explanation

Commercial birds like broilers typically weigh significantly more than 40-70g at market age. However, if referring to day-old chicks or specific small commercial species, weights vary. Standard poultry science texts often cite average commercial bird (broiler) weight at slaughter around 2-3 kg, but for egg-laying hens, it's around 1.5-2 kg. The options are very low, suggesting a specific context like 'day-old chick' or a different species not specified. Without context, 60g is a plausible guess for a small commercial bird (like quail) or day-old chick, but the question is ambiguous.