Final answer:
Red blood cells are specialized cells that change shape and are responsible for carrying oxygen to various parts of the body.
Step-by-step explanation:
Among the choices given, red blood cells are the type of blood cell that can change shape and are responsible for carrying oxygen to cells that need it. Red blood cells contain hemoglobin, a protein complex that binds to oxygen and allows for its transport throughout the body. Unlike white blood cells, which are part of the immune system, or platelets, which are involved in blood clotting, red blood cells have the primary function of gas exchange, particularly oxygen delivery.
Red blood cells (RBCs) are the cells that can change shape and carry oxygen to cells that need it. They are the most numerous cells in the blood and consist mostly of hemoglobin, which binds with oxygen. RBCs deliver oxygen to cells and remove carbon dioxide as waste.