Question

what color does the sudan iii dye stain fats?
purple
white
red
orange

Explanation:

Sudan III is a fat-soluble dye. It has an affinity for lipids (fats). When Sudan III comes into contact with fats, it dissolves in the fat droplets. The chemical structure of Sudan III gives it a characteristic orange - red color. In biological and chemical tests for fats, Sudan III is used to stain fat droplets, and the stained fat droplets appear orange.

Answer:

orange