Question

when researching a topic, a student has taken the following notes:

• industrial manufacturers have dyed denim jeans blue by dipping them in a solution containing indigo powder.
• indigo doesnt dissolve in pure water, so manufacturers must mix hazardous chemicals with water to dissolve the powder.
• basic researcher kai discovered a process for dyeing blue jeans without chemicals.
• kai added indigo powder to a flask containing nanocellulose and produced a dye that could be spread directly onto the denim.
• nanocellulose is a natural, plant - based substance that separates the molecules of indigo powder.

the student wants to emphasize a difference between the two approaches to dyeing blue jeans. which choice most effectively uses relevant information from the notes to accomplish this goal?
(a) though created using a different process, kais dye contains the same ingredient as the dye produced by blue jean manufacturers.
(b) nanocellulose is a natural, plant - based substance that separates the molecules of indigo powder, which doesnt dissolve in water.
(c) the traditional approach to dyeing blue jeans is to dip them in a solution containing hazardous chemicals.
(d) kais approach substitutes a natural, plant - based substance for the hazardous chemicals that manufacturers have traditionally used.

Explanation:

The student wants to emphasize the difference in dye - ing jeans. Option D highlights the key difference by stating that Kat's approach substitutes a natural, plant - based substance for the hazardous chemicals used traditionally, directly contrasting the two methods. Option A focuses on similarity in ingredients, Option B just describes nanocellulose without contrasting methods, and Option C only mentions the traditional method without comparing to Kat's.

Answer:

D. Kat's approach substitutes a natural, plant - based substance for the hazardous chemicals that manufacturers have traditionally used.