The correct answer is 4. The normal range for pulse rate is 60-100 bpm for an adult, while the normal respiration rate range is 12-18 breaths per minute. Normal blood pressure is typically defined as 120/80 mm Hg. This makes the patient's blood pressure the only vital sign within normal limits. It is important to note that these ranges are not static, and are based on an individual's age, overall health, and risk factors. Additionally, the vital signs should ideally be measured multiple times on different occasions to establish a more accurate picture.