The correct answer is A) Foreign countries refused to buy American goods due to its passage.
The Smoot-Hawley Tariff Act contributed to the Great Depression in that Foreign countries refused to buy American goods due to its passage.
This act was best known as the Tariff Act of 1930. Ii imposed considerable tariffs over imports. Obviously, US former trading partners and foreign countries imposed similar actions over the US products as retaliation measures. That is why the US products couldn't be exported, affecting more the already struggling US economy.
The act had been signed by US President Herbert Hoover in June 1930.