Concept:Dilution factor is a ratio that tells how many times a stock solution is diluted to obtain the desired dilute solution.Explanation:It is calculated as the volume of the final diluted solution divided by the volume of the concentrated solution taken.In LaTeX: Dilution factor=V1V2Here, V2 is the final total volume and V1 is the volume of the original concentrated solution used.This value represents the number of times the original solution is diluted.Answer:C. number of times the volume of the concentrated solution is diluted to give the dilute solution