The correct option is this: IT LIMITS THE ABILITY OF A FIRM TO USE AGGRESSIVE PRICING TO GAIN MARKET SHARE IN A COUNTRY.
Dumping is said to occur when a foreign country bring its product into a country and sell it at a price that is far below the price of the substitute products that are been made by local industries in that country. Using low prices to attract customers is called aggressive pricing, it gives a company competitive advantage in the market. Anti dumping actions are actions taking by the government to prevent dumping.