Final answer:
The best sensorimotor intervention for a preterm infant is allowing for skin-to-skin contact, which supports the infant's development and provides warmth, comfort, and a sense of safety through the well-developed sense of touch.
Step-by-step explanation:
When caring for a preterm infant, the intervention that will best address the sensorimotor needs of the infant is C. Allowing for skin-to-skin contact. This method, commonly known as kangaroo care, is highly beneficial as it encourages maternal-infant bonding, regulates the infant's body temperature, and improves the baby's physiological stability. Skin-to-skin contact is consistent with the fact that newborns have a well-developed sense of touch and respond positively to soft stroking and cuddling, meeting their basic need for constant physical contact, as supported by their innate reflexes like the Moro and the grasping reflexes.
Moreover, allowing the preterm infant to have skin-to-skin contact will also align with their preference for human voices, especially their mother's, and their ability to distinguish the smell of their own mother, thus further aiding in their sensorimotor development and overall well-being.