In 2010, of the following ________ had the highest real GDP per person

A man-made resource such as a building or a machine is an example of which resource?

A) entrepreneurial ability B) labor C) physical capital D) human capital

Table 1.3 shows the hypothetical trade-off between different combinations of brushes and combs that might be produced in a year with the limited capacity for Country X, ceteris paribus.Table 1.3Production Possibilities for Brushes and CombsCombinationNumber of combsOpportunity Cost(Foregone brushes)Number of brushesOpportunity Cost (Foregone combs)J4 0NAK3 10 L2 17 M1 21 N0NA23 On the basis Table 1.3, what is gained by producing at point M rather than point N?

A. 21 combs. B. 1 comb. C. 2 combs. D. 23 combs.