Question: Which of the following relationships is true?
Choices:
text: Play-Doh can scratch diamond, therefore it is softer
label: A
text: Diamond can scratch Play-Doh, therefore Play-Doh is harder
label: B
text: Diamond can scratch Play-Doh, therefore diamond is harder
label: C
text: Play-Doh can scratch diamond, therefore it is harder
label: D
Answer: C
Fact: if one mineral can scratch another mineral then that other mineral is softer than that one mineral