Which question should be asked when comparison shopping? a. what celebrity bought the product? b. how will people view me if i buy the product? c. how long will it take to use the product d. how is the warranty similar to another product

Im pretty sure it's "D"... Hope this helps! :)

D. How is the warranty similar to another product because you never want to put emotions into the things your buying and you should always look at buying things from a neutral stand point to ensure your getting the best price for something. Also because if it is for your health you want to make sure if something goes wrong the warranty is good.