While researching a topic, a student has taken the following notes: Traditionally, manufacturers have dyed denim jeans blue by dipping

Question

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

Traditionally, manufacturers have dyed denim jeans blue by dipping them in a solution containing indigo powder.
Indigo doesn’t dissolve in just water, so manufacturers must mix hazardous chemicals with water to dissolve the powder.
Textile researcher Smriti Rai discovered a process for dyeing blue jeans without chemicals.
Rai added indigo powder to a hydrogel containing nanocellulose and produced a dye that could be spread directly onto the denim.
Nanocellulose is a natural, animal-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?

Accepted Answer

Choice D is the best answer. The sentence emphasizes a difference between the two approaches to dyeing blue jeans, noting that Rai&rsquo;s approach uses a natural, animal-based substance in place of hazardous chemicals. Choice A is incorrect. The sentence emphasizes a similarity between the dyes used in the two approaches, noting that the dyes contain the same ingredient; it doesn&rsquo;t emphasize a difference between the two approaches to dyeing blue jeans. Choice B is incorrect. The sentence explains what nanocellulose is; it doesn&rsquo;t emphasize a difference between the two approaches to dyeing blue jeans. Choice C is incorrect. The sentence explains the traditional approach to dyeing blue jeans; it doesn&rsquo;t emphasize a difference between the traditional approach and Rai&rsquo;s approach.

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