There is external and internal so I'll list th external. The most important is skin then mucus, sweat or secretion, hair, nails and tears which are all part of the integumentary. Some internal defenses are white blood cells and T cells.
Answer: The correct answer to the question is option C
OSTEOARTHRITIS.
The client has a degenerative form of disease that is evidenced by osteoarthritis.
Explanation: Osteoporosis is otherwise known as degenerative joint disease.
In a healthy joint,a protective cartilage cushions the end of bones(articulating bones) and as well acting as a shock absorber.
In osteoarthritis,these cartilage that acts as a cushion to the bones wears down down or generates with time exposing the joint and the bones predisposing them to mild to moderate friction that occurs as a result of mobility of the bones/joint.
Osteoarthritis mostly affect joints of the hips, hands,spine and knees.
Some of the common symptoms of Osteoarthritis are;pain in the joints of the hands,knees,hips,lower back and neck with crackles,stiffness and tenderness of the joints which often results to difficulty in walking and deformity of the joint if left untreated.
Weathering describes the breaking down or dissolving of rocks and minerals on the surface of the Earth.
The area of the frontal lobe that is devoted to the production of fluent speech is the Broca's area. It contains neurons that is involved in speech production and language comprehension. It is classified into two parts namely the pars triangularis and the pars opercularis.