Final answer:
The normal vital sign for a 5-year-old child when measuring blood pressure is to be less than the 90th percentile. A grade 1+ femoral pulse might be slightly weak but can be normal, and a temperature of 100.9°F indicates a fever. Absent femoral pulses would be concerning and not a normal finding. The correct option is C.
Step-by-step explanation:
The normal findings when measuring the vital signs of a 5-year-old child include femoral pulses that can be felt and are graded on a scale from 0 to 3, with 2+ being a normal finding, so a femoral pulse graded at 1+ might be considered slightly weak but can be normal depending on the child's baseline status.
An oral temperature up to 98.6°F (37°C) is considered normal, thus a temperature of 100.9°F suggests a fever or increased body temperature possibly due to an underlying condition. The blood pressure of a healthy child should be less than the 90th percentile for their age, sex, and height, while absent femoral pulses would be an abnormal finding and prompt further evaluation. Therefore, the blood pressure < 90th percentile is the normal finding for a 5-year-old child's vital signs.