The correct answer is random selection.
Random selection refers to a process in which a sample or group of participants for a research study are randomly drawn from the entire population the researcher has access to. The main strength of using a random sample for a research study is that biases are avoided and the findings obtained are more representative of the population as a whole.
Because most Africans were sold as slaves. Africa also again delt with apartheid but that has nothing to do with this tho.
Answer:
The Hawthorne Effect
Explanation:
The Hawthorne Effect -
It refers to the method of altering or modifying the behavior with respect to the observer or according to the situation , is referred to as the Hawthorne effect .
It is also known as the observer effect .
It is the natural phenomenon of the human mind , where the behavior of the person changes with the person observing him .
Hence , from the given scenario of the question ,
The correct answer is The Hawthorne effect .