Answer:
Selection bias
Explanation:
Selection bias occurs because the sample that is taken is not representative of the general population.
If a sample is taken from the undergraduate students you can only generalize to undergraduate students.
Say that you want to know which is the most popular baseball team in the country and you take a sample from New York, and that give a result that 60% of the sample supports the Yankees. If you say "60% of americans support the Yankees" you will be commiting an error because your sample is not representative, and Californians may not share that result (for example).
The answer is "the social-conflict approach".
The social conflict approach is a way to deal with social theory that contends that society is described by different disparities and clashes that reason individuals to act socially, delivering change.
Society, according to the social conflict approach, isn't amicable. It's not steady. Society doesn't create agreeable balance. Truth be told, it's overflowing with imbalance. So this methodology is extremely about investigating imbalances of race, class, sexual orientation, and ethnicity, and the social clashes which result. Basically, these contentions will result in change, changes that will move society.
If you show me the document I would be able to know but I can work it out for you if it was written by your teacher or you used the internet that means it’s a secondary source but if it was written at the exact date the assassination of Abraham Lincoln happened that means it is a primary source. Hope this helps
answer- a secondary source
explanation-since the author of the souce wasnt in the battle it is a secondary source
