During a well-child visit, a parent asks why their 7-month-old has started to reach for objects with one hand before picking up smaller items with the fingers. Which explanation should the nurse give?

A. Infant motor development follows a proximal-to-distal pattern, meaning control develops from the center of the body outward. At 7 months, infants first gain control of shoulders and arms, allowing them to reach with the whole hand. Later, fine motor skills like the pincer grasp (using thumb and forefinger) develop around 9–12 months, enabling the child to pick up small objects. This progression is typical and expected. B. At 7 months, infants are still developing bilateral coordination. It is normal for a baby to favor one hand or alternate hands inconsistently. Expecting equal use of both hands at this stage reflects a misunderstanding of normal motor development. C. Fine motor skills, such as using the thumb and forefinger to grasp small objects, emerge later. Reaching with the whole hand at 7 months is part of normal development. Labeling it as delayed is incorrect and may cause unnecessary concern. D. The infant is following the typical developmental sequence, progressing from gross motor to fine motor control. Reaching with one hand before using the pincer grasp does not indicate skipped milestones. Developmental milestones are achieved in a predictable order, and this behavior is within normal limits.