Answer:
Correct option is A.
Economies of scale
Explanation:
Monopoly is a market structure where single merchant sells the item which has no nearby substitutes. With an imposing business model, there is just one firm in a market with no comparative items. There will be hindrances to entry. Perfect competition is a market structure in where there are enormous number of purchasers and venders selling the indistinguishable items. In this kind of market, there will be free passage and exit.
Among the accompanying the best discloses the hindrances to entry and exit in this situation is as per the following:
At first expenses are high. Normal all out cost falls as there is an expansion in the creation for a huge scope, enormous yield will prompt lower normal expense. Due to the huge size of the firm, existing firms profits by the lower normal all out expense. Along these lines, the organizations will discover hard to contend with the current firms because of higher introductory arrangement cost and subsequently they discourage entry.