Following up on you simplifying learning as something that itself is not a complex high level activity. At the same time as you are putting fruit in front of the baby it is looking all over at everything. That fruit object is just one of the constellation of objects in the environment. Her eyes are being driven by subcortical structures to scan the shapes of objects. To segment the visual field into objects; the cluster of features that make up an object. The cortical structures that hold an object distribute the features over many maps and coding and that decoding is itself a fairly complex activity.
Continuing on the drive/effect trail and learning: