Final answer:
Acne is a skin disturbance characterized by papules, pustules, and redness. It is caused by clogged pores, bacterial infection, and inflammation.
Step-by-step explanation:
The correct answer is d. Acne.
Acne is a skin disturbance that is characterized by the formation of papules, pustules, and redness. It is caused by the clogging of sebum-filled pores, leading to bacterial infection and inflammation. The immune system responds with inflammation, resulting in swelling and redness.