A b c or d ? pls help

The distribution of related animals and plants across the world

To maintain asepsis when administering an injection, all parts of the syringe can be handled except the:

When new rock is added to an oceanic ridge, the magnetized strips on either side of the ridge are evidence of sea-floor spreading. this is because the rocks on the two sides of the ridge o are equal in width and in polarity are polar opposites oare magnetized vary in width but are equal in polarity