Answer:
The correct answer is option C. Increased competition
Explanation:
Free trade means that different small scale and big scale businesses are now allowed to enter into economies in which they might not have been able to penetrate earlier.
Rooby is unable to raise prices because free trade has allowed different producers of same products to enter into same economies and with the increase in competition.
Companies cannot price their products as per their wishes and loot the customers. If they charge too high, there is a lot of other companies which can take their place easily. It helps to maintain the balance in the economy.