What is the primary function of the buffy coat in blood components?

A To separate plasma from other blood components
B To facilitate the exchange of gases between blood cells
C To serve as a reservoir for platelets and white blood cells ✓
D To regulate blood pH levels

Explanation

The buffy coat is the fraction of an anticoagulated blood sample after it has been centrifuged, where most of the white blood cells and platelets are found.

Source

Clinical Hematology Principles, Procedures, Correlations
Hematology Hematology: Blood Components Hematology: Blood Components Easy MEDICAL Confidence: high