Multiple choice

______ carries oxygen.

  1. RBC

  2. WBC

  3. Platelet

  4. Plasma

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

RBC (Red Blood Cells) is correct because red blood cells contain hemoglobin, which binds to oxygen molecules in the lungs and releases them to tissues. WBCs fight disease, platelets help clotting, and plasma is the liquid medium that carries the cells.