A is correct
The slides would have the specimen on it as well
Undisturbed rock formations on mountain tops are basically an indication of the Earth's age. This can be supported by the law of proposition. This law states that the youngest sediments or rock are found at the top of the sequence and the oldest are found at the bottom - given they're undisturbed. So the higher mountain tops or rocks formation are, the more we can say that the Earth is indeed very old.
It is becuase those people came from different places and mated with others leading to a combination of dirrerent traits.
The moist heat from a poultice can help to draw out the infection and help the abscess shrink and drain naturally