Final answer:
The best way to remove copper sulfate from a leather belt is by applying a mixture of equal parts white vinegar and water, followed by gentle dabbing. Option B is correct.
Step-by-step explanation:
The correct answer is B) Applying a mixture of equal parts white vinegar and water, followed by gentle dabbing.
Copper sulfate is a compound that can stain leather due to its intense blue color. White vinegar contains acetic acid, which can help break down and dissolve the copper sulfate stain without damaging the leather. By mixing equal parts white vinegar and water and gently applying it to the stain, you can effectively remove the copper sulfate without causing further damage.
Using a strong bleach solution or scrubbing the stain vigorously with a brush (options C and A) can be harmful to the leather and may cause discoloration or further stains. Rinsing the stain with hot water (option D) may not be sufficient to completely remove the copper sulfate stain. Therefore, the best approach is to use the vinegar and water mixture mentioned in option B.