Mrs.Franco has brought her 13-month-old daughter Ella into the emergency room with nausea and vomiting.Ella is crying.Which of the following behavioural pain assessment scales would be appropriate for the nurse to use to determine the intensity of Ella's pain?

A) Behavioural Pain Scale (BPS)
B) Faces Pain Scale
C) Visual Analog Scale
D) Face,Legs,Activity,Cry,Consolability (FLACC)

The Face, Legs, Activity, Cry, Consolability (FLACC) scale is the most appropriate choice for assessing pain in infants who are unable to verbally communicate their pain. It takes into consideration behaviors such as facial expressions, crying, and body movements to determine the level of pain that the infant is experiencing. The other options, such as the Behavioral Pain Scale (BPS), are better suited for assessing pain in older patients who can communicate their pain levels. The Faces Pain Scale and Visual Analog Scale are also not appropriate for infants who are unable to understand or respond to the visual cues presented.