Final answer:
The writers' inclusion of enough evidence to support their claim varies depending on the writer. Therefore, the most appropriate option is D.
Step-by-step explanation:
The answer to the question of whether each author includes enough evidence to support their claim varies depending on the writer. Some authors may include sufficient, credible evidence to support their claim, while others may not.
When evaluating the evidence presented by each writer, it is important to consider whether the first reading of the evidence is persuasive and if the logic of their position is apparent and credible. Additionally, it is necessary to assess whether the writers omit any relevant points that could strengthen their argument.
Ultimately, the willingness to accept an author's conclusions will vary based on the answers to these questions and the adequacy of the evidence provided.