The correct answer is...

Persistent headaches can be a common symptom of high blood pressure, particularly when blood pressure levels are significantly elevated. High blood pressure, or hypertension, puts extra strain on the blood vessels and can cause changes in the brain's blood flow, which might lead to headaches. These headaches are often described as dull or throbbing and may occur frequently. While not everyone with high blood pressure will experience headaches, they can be a notable sign, especially if they are severe or persistent and occur alongside other symptoms of high blood pressure. Regular monitoring and management of blood pressure are crucial to prevent complications and manage symptoms effectively.