The teachers present at the teacher's lounge could be there for a variety of reasons, for example it could even me a meeting of the supporters of the school uniform! his sample is therefore possibly biased - there is no way of knowing that it represents the whole population. He chose it because it was convenient to him - and the answer is "a, convenience sampling"
Answer: D
Explanation:
When country abandons a no-trade policy in favor of a free-trade policy. as a result, the domestic price of beans increases to equal the world price of beans, then at the world price, the quantity of beans supplied in that country exceeds the quantity of beans demanded in that country. that country becomes an exporter of beans, that country has a comparative advantage in producing beans.
