Final answer:
Cool, clammy skin is a finding that would lead the nurse to suspect that a client has developed hypovolemic shock caused by postpartum hemorrhage.
Step-by-step explanation:
A finding that would lead the nurse to suspect that a client has developed hypovolemic shock caused by postpartum hemorrhage is cool, clammy skin (option c). Hypovolemic shock is characterized by restricted peripheral blood flow, which can result in cool and clammy skin. This is due to the body's attempt to conserve blood flow to vital organs.