Final answer:
The letter that corresponds to a mole that has grown to 8mm in size, according to the ABCDE rule for early warning signs of malignancy, is D.
Step-by-step explanation:
The ABCDE rule for early warning signs of malignancy is used to identify potential signs of melanoma, a type of skin cancer. The letter that corresponds to a mole that has grown to 8mm in size is D. The ABCDE rule stands for:
- Asymmetry - when the two sides of the mole are not symmetrical
- Borders - when the edges of the mole are irregular in shape
- Color - when the color of the mole is varied shades of brown or black
- Diameter - when the size of the mole is larger than 6 mm (0.24 in)
- Evolving - when the shape or characteristics of the mole have changed
Therefore, a mole that has grown to 8mm in size involves the letter D according to the ABCDE rule.