What is the term for the process by which platelets release chemical signals to attract other platelets and promote blood clotting?

A Aggregation
B Adhesion
C Activation
D Release reaction
The release reaction is a process by which platelets release chemical signals to attract other platelets and promote blood clotting.
Robbins and Cotran Pathologic Basis of Disease
Hematology Hematology: Blood Components Hematology: Blood Components Medium MEDICAL Confidence: high