Answer: D. Bias occurs when a writer intentionally omits information that weakens his or her argument.
Step-by-step explanation:
Social studies is the study of people and how they relate with one another in society.
In research, bias can occur for a multitude of reasons and one of these reasons is when a writer intentionally omits information that weakens his or her argument.
All the relevant information about a subject should be included so that the research can be scrutinized appropriately. However, sometimes researchers want the research to turn out in a certain way for whatever reason and will omit information that will weaken this result.
This will result in a bias in the research.