Final answer:
b) proximodistal trend. Developing the ability to grab with the full hand before picking up items with finger and thumb exemplifies the proximodistal trend of development, meaning growth starts at the body's center and moves toward the extremities. It shows a natural progression from gross to fine motor skills, acknowledging developmental milestones that occur in a specific sequence but can be culturally influenced.
Step-by-step explanation:
Developing the ability to grasp with the full hand before the ability to pick up something with a finger and thumb is an example of the proximodistal trend. This term refers to the pattern of development where growth starts at the center of the body and moves towards the extremities. In the developmental context, babies will typically develop control over their shoulders and arms before they acquire the fine motor skills necessary for dexterous activities like holding a pencil or using scissors to cut out paper shapes, which are considered fine motor skills. Motor skills are typically classified into two categories: gross motor skills, involving larger movements of the whole body, and fine motor skills, involving smaller, more precise movements, particularly of the hands and fingers.
The opposition movement of the thumb toward the fingers which allows the grasping of objects matures as the baby develops. Initially, the grasp reflex is a primitive gesture where the baby's fingers will close around anything placed in the palm. This is one of the few innate behaviors in human beings. However, as the child grows, this reflex becomes a more deliberate and refined action, showcasing the proximodistal trend of motor development.
Furthermore, developmental changes such as these demonstrate that there are developmental milestones children achieve as they grow. These milestones follow a natural progression which is inherent in all humans and yet can be influenced by environmental factors and cultural practices.