Which of the following is not considered a type of mass movement?
a creep
b landslides
c mudflows
d these are all types of mass movement.

c. movement because i took the test and it lets me review my answers

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.