Where are the answer choices?
Either a primary source could be unavailable or a primary source could be extremely biased. For example, if a researcher was looking at King George, they might not want to use the diary of someone who despised King George as a big part of their research.
Who posses absolute power. He believed all humans were naturally wicked and that they needed laws. He did not believe in the freedoms of natural; right and etc.
Some thing illegal that could happen