Which of the following is a sign of contentment in a breastfeeding baby?

A sign of contentment in a breastfeeding baby is characterized by behaviors that indicate satisfaction and a comfortable state following feeding. Alertness when awake suggests that the baby is well-nourished and content, as they are able to engage with their environment in a relaxed manner. This alertness is a positive sign that the baby has received adequate nutrition through breastfeeding and feels secure and happy.

In contrast, behaviors such as frequent crying and fussiness often indicate discomfort or dissatisfaction, possibly suggesting that the baby is hungry or experiencing some form of distress. Napping immediately after feeding could be interpreted in various ways; while it might indicate that the baby is sleepy, it does not specifically highlight contentment, as babies can also fall asleep out of fatigue rather than satisfaction. Therefore, alertness when awake is a strong indicator of a baby's contentment after a feeding.