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Verbal·Expression of Ideas·Rhetorical Synthesis

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

• The typical resting viscosity of oobleck (cornstarch mixed with water) is 5–100 centipoise (cP).
• Oobleck increases in viscosity (becomes thicker) when shaken.
• The typical resting viscosity of nail polish is 11,000–116,000 (cP).
• Nail polish decreases in viscosity (becomes thinner) when shaken.
• A fluid is Newtonian if its viscosity remains stable under shear (mechanical force such as being shaken or stirred).
• A fluid is non-Newtonian if its viscosity changes under shear.

The student wants to contrast how shear affects nail polish and oobleck. Which choice most effectively uses relevant information from the notes to accomplish this goal?

A

Nail polish is non-Newtonian, meaning its viscosity decreases under shear; oobleck, by contrast, increases in viscosity.

B

Oobleck has a much lower resting viscosity than nail polish but becomes thicker under shear.

C

Though the viscosities of both oobleck and nail polish change under shear, oobleck’s typical resting viscosity (5–100 cP) is lower than that of nail polish (11,000–116,000 cP).

D

Nail polish becomes thinner when shaken, while oobleck becomes thicker.