"The body paragraphs of 'Agreement and Disagreement' essays should begin with a clear topic sentence, which clearly mentions the view. Then, this sentence will be further supported by some justification as well as evidence. Finally, it will be concluded with a flaw/weakness related to that view as long as a high band score is expected. Needless to say, for presenting the writer's personal view, this part ( ) is NOT necessary again."

Now as for this topic, which of the following reasons can be a convincing argument and counter-argument for “experimenting with animals for the purpose of ensuring the safety of products”?