During middle childhood, the bones of the body lengthen and broaden.
The bones of the body lengthen and broaden during childhood. The ligaments are not yet firmly attached to bones. This non-attachment with increasing muscle strength, gives children unusual flexibility of movement.
So we can conclude that during middle childhood, the bones of the body lengthen and broaden.
Learn more about bones here: https://brainly.com/question/412179