When MPP is zero

✅ Explanation:MPP (Marginal Physical Product) is the additional output produced by adding one more unit of input. When MPP is zero, it means adding one more unit of input does not increase the output. MC (Marginal Cost) is the additional cost incurred by producing one more unit of output. When MPP is zero, it implies that the additional cost incurred to produce one more unit of output is at its lowest point, hence MC is minimum.