What is characteristic of an infant's hands from 0.7 to 6 months of age?

The characteristic of an infant's hands from 0.7 to 6 months of age is that they are typically open and relaxed. During this stage of development, infants are still mastering their motor skills and tend to keep their hands in a more relaxed and open position. This reflects the natural progression of their muscle control and coordination as they gradually develop more intentional movements.

In contrast, a neat pincer grasp, which involves the use of the thumb and one finger to pick up small objects, develops later, around 9 to 12 months. Fists tightly closed would be more representative of newborn behavior since infants may clench their fists reflexively but will gradually learn to open their hands as they develop. Rapidly grasping objects is also not typical for this age range; while infants will occasionally reflexively grasp fingers or certain objects placed in their hands, it does not represent consistent or intentional grasping behavior until they are older.