Final answer:
The infant palmar grasp is reflexive, or in other words, the grasp reflex in infants is true. It's an innate behavior present from birth to around five or six months of age.
Step-by-step explanation:
The infant palmar grasp is indeed reflexive, meaning the grasp reflex is true. This reflex is one of the several innate reflexes that newborns possess, which help them in maintaining close physical contact with their caregiver. From birth, infants display this instinctive grasping when an object is placed in their palm, showing a surprisingly strong grip. This reflex, which is present at birth and stays until about five or six months of age, is believed to have evolutionary advantages. It may have increased an infant’s chance of survival by enabling them to hold onto their caregiver, preventing falls and maintaining crucial physical contact.