Final answer:
The clinical feature of an aortic dissection primarily includes sudden-onset chest or back pain, described as tearing or ripping.
Step-by-step explanation:
The clinical features of aortic dissection include sudden-onset chest or back pain. Aortic dissection is a serious condition where there is a tear in the wall of the major artery carrying blood away from the heart (aorta). This presents abruptly and the pain is often described as tearing or ripping in nature. Other features such as severe headache and dizziness, pulsatile abdominal mass, and hematuria and dysuria are not typically related to aortic dissection; however, severe headache and dizziness may be present as a symptom in related conditions such as coarctation of the aorta or in the case of cardiovascular complications. The correct answer to the question is c) Sudden-onset chest or back pain, which is the hallmark symptom of an aortic dissection event.