Answer: Accuracy affects the validity of a source because you need to be accurate in your answer in order for it to be valid.
Explanation: For example, if your getting your information from a college professor, he needs to be accurate in where he is getting his information from in order for it to be considered to becoming from a valid source.
When trying to convey the thoughts and feelings of immigrant laborers in the early 20th century, it would be best to read a narrative type of passage, due to the story.