Answer:
E, A, B, D, C
Explanation:
Leukocytes are cells that are found in the blood stream and they help identify foreign materials and fight against them, they are also called white blood cells.
The process that is given in the question looks like this when the steps are put in the right order;
E, cytokines are secreted where needed and they signal certain cells according to the action that needs to be taken.
A, endothelial cells which are located on the surface of the blood vessels produce selectins.
B, selectins which are proteins that are made up of single chain and help with the cell adhesion with other molecules, carbohydrates in the example.
D, leukocytes roll along the walls of the blood vessel.
C, and lastly leukocytes crawl out of the vessel into the adjacent tissue.
I hope this answer helps.