Question

practice it
what do t cells do?
transport oxygen to the cells.
help the body digest food.
produce insulin to regulate blood sugar levels.
recognize and destroy infected cells directly.
regulate the bodys temperature.

Explanation:

T cells are a type of white blood cell that play a crucial role in the immune system. They are responsible for recognizing and destroying infected cells directly. Transporting oxygen to cells is the function of red blood cells. Helping the body digest food is related to digestive enzymes and organs. Producing insulin to regulate blood sugar levels is the role of pancreatic beta cells. Regulating the body's temperature is mainly through mechanisms like sweating and shivering.

Answer:

Recognize and destroy infected cells directly.