Final answer:
The term used to describe 'pinpoint skin hemorrhages' is Petechiae, which are small red or purple spots caused by blood leaking from damaged vessels.
Step-by-step explanation:
The medical term used to describe "pinpoint skin hemorrhages" is b) Petechiae. Petechiae are small, red or purple spots on the skin, which occur as a result of blood leaking out of damaged vessels. These are different from terms like ecchymosis, purpura, and hematoma, which refer to different types or sizes of bleeding into the skin. Petechiae specifically refer to the smallest spots, often the size of pinpoints, that are due to microvascular damage.