Back to forum
Verbal·Expression of Ideas·Rhetorical Synthesis
medium
While researching a topic, a student has taken the following notes:
  • The Mohs scale of mineral hardness is a ten-point scale that orders minerals by hardness based on their ability to scratch other minerals.
  • Minerals with larger numbers are harder than minerals with smaller numbers and can leave visible scratches on them.
  • Minerals with smaller numbers are softer than minerals with larger numbers and cannot leave visible scratches on them.
  • The mineral fluorite has a Mohs scale number of 4.
  • The mineral orthoclase has a Mohs scale number of 6.
  • The mineral corundum has a Mohs scale number of 9.
The student wants to emphasize orthoclase’s Mohs scale number. Which choice most effectively uses relevant information from the notes to accomplish this goal?
A
In the Mohs scale of mineral hardness, corundum (9) is ranked higher than fluorite (4).
B
Orthoclase has a Mohs scale number of 6, which means that it is harder than fluorite (4) but softer than corundum (9).
C
Orthoclase, fluorite, and corundum can be ordered by their ability to leave visible scratches on other minerals.
D
Corundum, which has a Mohs scale number of 9, can scratch both fluorite and orthoclase.