Question

1. what is the main function of white blood cells?

binding and transporting oxygen to cells
transporting substances like sugars and digested proteins, vitamins, and hormones
fighting infectious agents like fungi, bacteria, and viruses
gathering around the site of the injury and sticking together to form a clot

Explanation:

• Binding/transporting oxygen is the role of red blood cells.
• Transporting nutrients/hormones is done by blood plasma.
• Forming clots is the function of platelets.
• White blood cells are the body's primary defense against infectious pathogens.

Answer:

fighting infectious agents like fungi, bacteria, and viruses