Kim had an accident while riding a bike. she suffered a severe head injury and was hospitalized. doctors discovered that kim hurt her cerebrum. this type of injury could cause a loss of impaired

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.

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.