Final answer:
The statement that represents a child who has not yet grasped the knowledge of recognizing groups of ten is option a) counts out sixteen objects and can tell you how many by counting each piece.
Step-by-step explanation:
The statement that represents a child who has not yet grasped the knowledge of recognizing groups of ten is option a) counts out sixteen objects and can tell you how many by counting each piece.
This statement indicates that the child is counting each piece individually rather than recognizing that there are two groups, one with ten objects and another with six objects. In order to grasp the concept of groups of ten, the child should be able to recognize and group the objects together.
For example, in option b), the child counts out sixteen objects and separates ten objects into one pile and six objects into another pile. This shows an understanding of groups of ten.