Final answer:
In the Classical period, the Kouros sculptures underwent changes and became more naturalistic and less rigid. The later Kouros figures depicted idealized bodies with realistic modeling and more natural poses.
Step-by-step explanation:
In the Classical period, several changes were made to the Kouros sculptures. Initially, the Kouros figures exhibited rigid poses, influenced by ancient Egyptian sculpture. However, as the period progressed, the Kouros figures became more naturalistic and lost their Egyptian rigidity. These later Kouros figures depicted idealized bodies with realistic modeling and showed a transition towards more natural poses and realistic portrayal of the human form.