The correct answer is a: "A protectionist law"
Protectionism is an approach in foreign economic policy that aims to prevent inefficient domestic producers from competing in equal terms with more productive international competitors that are able to charge lower prices for their products and hence, to attract more consumers.
When tarriffs are established, the market price of the cheap imports rises and, therefore, the more costly and highly priced domestic products are able to compete with imports in terms of prices, which otherwise without tarriffs, would be impossible.
