to be a formal debate, the debate must include\n○ strong opinions.\n○ personal attacks.\n○ unlimited time to…

to be a formal debate, the debate must include\n○ strong opinions.\n○ personal attacks.\n○ unlimited time to talk.\n○ set rules and guidelines.
Answer
Brief Explanations:
Formal debates have structured rules. Strong opinions are not exclusive to formal debates. Personal attacks are unethical in formal debates. Unlimited talking - time is not practical. Set rules and guidelines are essential for a formal debate's order and fairness.
Answer:
set rules and guidelines.