Question

which of these best strengthens a factual argument? descriptions from personal experiences statistics and examples from reliable references numerous visual representations strongly stated beliefs and viewpoints

Explanation:

Factual arguments are best strengthened by objective and verifiable data. Statistics and examples from reliable references are objective and can be verified, unlike personal - experience descriptions which are subjective, strongly - stated beliefs which are opinions, and visual representations which may or may not be factual without proper context.

Answer:

statistics and examples from reliable references