Answer:
Contrary to popular belief, the initial goal of the civil war was to preseve the union, not abolish slavery.
Explanation:
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:
я действительно не знаю, пожалуйста, не удаляйте этот вопрос
Explanation: