Answer:
The most appropriate concluding statement to the end of the first paragraph of "Animal Experimentation- Con" would be:
A Cruelty is cruelty, and must never be tolerated, regardless of the circumstances.
Step-by-step explanation:
This statement reinforces the writer's argument that animals should not be experimented upon, and emphasizes the importance of treating animals with respect and compassion. It also serves as a clear and concise conclusion to the paragraph.