Which of the following would be the most effective evidence?

A. the results of a scientific study
B. the author’s thoughts and concerns
C. a summary of the public’s opinions
D. an ethically compelling argument

A?

How are you defining "most effective"? Most effective to do what?

I don't know its in the question :/

I guess A is the best answer here. The others depend on opinions, feelings, etc.

Thank you so much :D

Yes, Option A, the results of a scientific study would be the most effective evidence. The reason is that scientific studies are conducted using rigorous methodologies and follow established protocols to ensure the accuracy and reliability of the findings. Therefore, the results of a scientific study are based on objective data and have been thoroughly tested and scrutinized by experts in the field. This makes them highly credible and persuasive evidence. To determine the most effective evidence, it is important to consider factors such as credibility, reliability, objectivity, and relevance to the topic. In this case, a scientific study meets these criteria, making it the strongest choice among the options provided.