An easy reference to remember the signs of melanoma is the abcde rules. identify the correct abcde set of rules

I believe the answer is:
-  Asymmetery,
the moles that indicate melanoma tend to have uneven sides

 - Border irregularity,
Harmless mole tend to be closer to a perect circle compared to melanoma moles

- Color,
Melanoma moles tend to be significantly darker compared to normal moles

 - Diameter,
Compared to harmless moles, melanoma moles tend to be larger in size

- Evolving
The size of melanoma moles would keep growing over the years while harmless moles tend to stay the same.