Answer:
The correct answer is option D.
Explanation:
Economies of scale refer to the situation when the average cost of production goes on decreasing as the volume of output produced increases.
This implies that a larger firm has lower average production costs as compared to a smaller firm. Â
The economies of scale can be both external as well as internal. There are a number of factors that lead to economies of scale. Â
One of the factors is the specialization of labor. As workers and managers become more specialized the efficiency increases and average production cost declines. Â
Also, large firms are able to get credit at a lower interest rate. They are also able to get inputs at a lower cost and thus enjoy cost advantages. Â
When the firms are able to increase their output by a great proportion only by increasing their input by a small proportion, they are able to get cost advantages.