Final answer:
d. skin histology. Skin histology is the microscopic study of the skin's tissue. It involves examining the shape and arrangement of cells in tissue. The skin's protective mechanisms, such as a high pH and mucus, help defend against diseases caused by organisms.
Step-by-step explanation:
The microscopic study of the skin's tissue is called skin histology.Histology is the study of the shape and arrangement of cells in tissue. To protect against diseases caused by organisms, the skin uses mechanisms such as a high pH and mucus. Desquamation, the shedding of dead skin cells, helps with preventing infections by removing potential pathogens from the skin's surface.