When energy moves from a state of higher concentration to a state of
lower concentration, scientists refer
to this as .
A. entropy
B. electrical energy
C. nuclear energy

That's called diffusion which happens in active transport

the closest option would be, A. entropy.

Explanation:

for the points

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.