APGAR Score Assessment for Newborn Heart Rate

A newborn has just been delivered via cesarean section. Upon examination, the nurse notes that the infant has a heart rate of 90 beats per minute and is exhibiting weak respiratory effort. According to the APGAR scoring system, the nurse needs to evaluate the newborn's condition appropriately to determine whether immediate resuscitation is required.

Fill in the blank: For the heart rate component of the APGAR score, a score of ___ is assigned when the heart rate is less than 100 beats per minute.